China has a large and diverse stainless steel pipe manufacturing industry, ranging from publicly listed mills serving major energy projects to specialized manufacturers focused on custom dimensions, duplex grades, precision tubing or integrated piping systems.
For international buyers, the best stainless steel seamless pipe China manufacturer is not necessarily the largest company. The right choice depends on the required material grade, pipe standard, diameter, wall thickness, inspection plan, certification, order quantity and intended application.
This guide compares ten China-based manufacturers with publicly verifiable stainless steel seamless pipe or tube manufacturing capabilities. It also explains how buyers can evaluate production capacity, quality documentation, customization and export support before issuing a purchase order.
| Manufacturer | Location | Main Product Focus | Best Suited For |
|---|---|---|---|
| Guangxin PipeTech | Fujian | Stainless steel, duplex and nickel-alloy seamless pipes, tubes and piping components | Custom industrial orders, technical support and export projects |
| Zhejiang Jiuli Hi-Tech Metals | Zhejiang | Seamless and welded stainless, duplex and corrosion-resistant alloy piping | Large energy, oil and gas, LNG and industrial projects |
| Jiangsu Wujin Stainless Steel Pipe Group | Jiangsu | Stainless and nickel-alloy seamless and welded pipes | Petrochemical, power, LNG and pressure-equipment projects |
| Zhejiang Tsingshan Steel Pipe | Zhejiang | Stainless steel seamless and welded pipes, tubes and fittings | Integrated stainless piping procurement |
| Zhejiang Xintongda Special Steel | Zhejiang | Austenitic, duplex, super duplex and nickel-alloy seamless products | Projects requiring specialized alloys and international approvals |
| Baofeng Steel Group | Zhejiang | Stainless steel and nickel-alloy seamless and welded pipes | Broad grade selection and larger industrial orders |
| Yada Green Energy Solutions | Zhejiang | Seamless pipes, welded pipes, prefabricated piping and modules | Marine, LNG, offshore and integrated piping systems |
| Botong Metal Technology | Zhejiang | Precision seamless tubes, BA, EP, AP and hydraulic tubing | Semiconductor, pharmaceutical and high-purity applications |
| Zhejiang Guanyu Steel Tube | Zhejiang | Austenitic and duplex seamless tubes and pipes | Heat exchangers, boilers and general industrial tubing |
| Zhejiang Yinlong Stainless Steel | Zhejiang | Seamless and welded stainless steel pipes, tubes and fittings | Standard export orders and corrosion-resistant piping |
The table is intended as a procurement starting point. Buyers should verify current manufacturing ranges, certificate validity, production availability and project references directly with each company before placing an order.
The manufacturers in this guide were evaluated using seven procurement-focused criteria.
The company must publicly identify itself as a manufacturer of stainless steel seamless pipes or tubes. Trading companies and stockists without clearly stated manufacturing capabilities were not prioritized.
This distinction matters because a manufacturer normally controls the production route, heat treatment, dimensional inspection and test plan. A stockist may offer faster availability, but it may not control the original manufacturing process.
The company must offer products relevant to industrial stainless steel piping, such as:
ASTM A312 stainless steel seamless pipes
ASTM A269 general-service seamless tubing
ASTM A213 heat-exchanger and boiler tubing
ASTM A789 or A790 duplex stainless steel products
Nickel-alloy or corrosion-resistant alloy pipe
Custom OD, wall thickness, Schedule or fixed lengths
ASTM A312 covers seamless, straight-seam welded and heavily cold-worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. It is therefore one of the principal standards buyers should review when sourcing industrial stainless steel pressure pipe.
Preference was given to manufacturers that publicly show a meaningful range of grades and standards rather than listing only generic “304 and 316 stainless steel.”
Relevant grades may include:
TP304 and TP304L
TP316 and TP316L
TP321 and TP347
904L
Duplex 2205
Super duplex 2507
Nickel alloys such as Inconel, Incoloy, Monel or Hastelloy
The required grade must still be selected according to the process medium, temperature, chloride exposure, pressure, fabrication method and governing project code.
A qualified stainless steel seamless pipe supplier should be able to explain how it controls:
Raw-material identity
Heat-number traceability
Chemical composition
Mechanical properties
Dimensions and wall thickness
Heat treatment
Hydrostatic or nondestructive examination
Surface condition
Final marking
Material test certificates
ISO 9001 is a quality-management-system standard. It indicates that an organization has established processes for quality management and continual improvement, but it should not be treated as proof that an individual pipe automatically complies with a specific ASTM or project specification. Product conformity must be supported by the applicable material certificate and inspection records.
Industrial projects frequently require more than catalogue sizes. Manufacturers were evaluated for their apparent ability to support custom dimensions, fixed lengths, end preparation, surface requirements, inspection plans and special alloy grades.
Companies with publicly stated experience in oil and gas, chemical processing, power generation, LNG, marine, heat exchangers, semiconductor or other demanding industries were given greater consideration.
The information used in this guide was reviewed against official company websites, recognized industry directories and public company information available at the time of publication.
The order should not be interpreted as a permanent or universal performance ranking. Manufacturing capacity, certification scope and delivery performance may change, and the most suitable supplier will vary by project.
Location: Ningde, Fujian Province
Best for: Custom stainless steel seamless pipe orders, alloy selection, export support and coordinated piping supply
Guangxin PipeTech manufactures stainless steel seamless pipes, heat-exchanger tubes and related piping components for industrial customers. Its publicly presented product portfolio includes austenitic stainless steel, duplex stainless steel and nickel-alloy pipes and tubes, as well as fittings and flanges.
The company states that it operates an ISO 9001 quality-management system and supplies international customers in Europe, the Middle East, Southeast Asia and other export markets.
ASTM A312 stainless steel seamless pipe
Stainless steel seamless tube
Duplex and super duplex seamless pipe
Nickel-alloy seamless pipe and tube
Heat-exchanger tubing
Butt-weld fittings
Forged components and flanges
Custom piping products
Guangxin PipeTech presents products in grades including TP304, TP304L, TP316, TP316L, duplex 2205, super duplex 2507 and several nickel-based alloys. Actual availability should be confirmed against the required dimensions, quantity and delivery date.
Guangxin PipeTech is particularly relevant to buyers who need a manufacturer to review a complete technical enquiry rather than quote a generic price per tonne.
Its value proposition is the combination of:
Stainless steel and high-performance alloy coverage
Custom pipe and tube specifications
Related fittings and flanges
Technical review before quotation
Material traceability and inspection-document options
Export packaging and international shipment support
This makes the company a practical option for distributors, engineering contractors and industrial buyers who need custom stainless steel seamless pipe rather than only standard stock dimensions.
Buyers should provide the grade, standard, NPS or OD, Schedule or wall thickness, length, quantity, test requirements, certification, destination and application. Providing the process medium and operating conditions can also help the technical team identify missing specification details.
Recommended for: Custom ASTM A312 orders, 304L and 316L piping, duplex and nickel-alloy projects, and buyers requiring coordinated pipe, fitting and flange supply.
Location: Huzhou, Zhejiang Province
Best for: Large industrial, energy, oil and gas, LNG and corrosion-resistant alloy projects
Zhejiang Jiuli Hi-Tech Metals is one of China’s most established industrial stainless steel and special-alloy piping manufacturers. Its public product portfolio includes seamless piping, welded piping, tubing, corrosion-resistant alloy OCTG, line pipe, clad or lined pipe, fittings and flanges.
The company serves industries including oil and gas, LNG, petrochemical processing, chemical plants, electric power, shipbuilding, pulp and paper, automotive production and instrumentation.
Broad seamless and welded product portfolio
Austenitic, duplex, super duplex and corrosion-resistant alloys
Large-project manufacturing capability
Research and testing infrastructure
Experience with major energy and industrial customers
Integrated pipe, tube and piping-component supply
Jiuli is likely to be considered where a project requires significant production capacity, specialized alloys, extensive qualification procedures or an established supply history in large energy sectors.
Recommended for: Large-volume or technically demanding oil and gas, LNG, nuclear, power and petrochemical projects.
Location: Changzhou, Jiangsu Province
Best for: Petrochemical, LNG, power-generation and pressure-equipment applications
Jiangsu Wujin Stainless Steel Pipe Group is a publicly listed manufacturer engaged in the research, development, manufacturing and sale of stainless steel and nickel-alloy seamless and welded pipes.
Its products are used in petroleum, chemical processing, natural gas, power equipment and machinery manufacturing. Public company information identifies seamless industrial stainless steel pipe, welded pipe, fittings and flanges as key parts of its portfolio.
Long manufacturing history
Seamless and welded production capabilities
Stainless steel and nickel-alloy coverage
Energy and petrochemical industry experience
Integrated pipe, fitting and flange products
Suitability for larger industrial procurement programs
Wujin is a strong candidate when buyers require a mill with an established background in pressure-related and energy-sector applications.
Recommended for: Petrochemical plants, pressure vessels, thermal power, LNG and large industrial equipment projects.
Location: Wenzhou, Zhejiang Province
Best for: Integrated stainless steel piping supply and larger industrial projects
Zhejiang Tsingshan Steel Pipe was founded in 2003 and focuses on stainless steel products. Public industry information describes its portfolio as including stainless steel seamless pipes, welded pipes, tubes, fittings and bright-annealed products.
The company is associated with the broader Tsingshan industrial network and has supplied products for marine, offshore and other industrial projects.
Stainless steel seamless and welded production
Integrated pipes, tubes and fittings
Access to a large stainless steel industrial ecosystem
Broad industrial project applications
Potential suitability for package procurement
Buyers considering Tsingshan should confirm which legal manufacturing entity will produce the order, the applicable mill approval, and whether the requested grade and size fall within that facility's current certificate scope.
Recommended for: Buyers looking for integrated stainless steel piping products supported by a large industrial group.
Location: Lishui, Zhejiang Province
Best for: Duplex, super duplex, nickel alloy and projects requiring specialized approvals
Zhejiang Xintongda Special Steel, commonly known as XTD, manufactures austenitic stainless steel, duplex, super duplex and nickel-alloy seamless pipes and tubes.
The company publicly lists a substantial portfolio of industry approvals and management certifications, including NORSOK M-650, ABS, DNV, LR, BV, PED, AD 2000 and ISO management systems. Certificate validity and the exact product scope should always be checked for the proposed order.
Austenitic stainless steel seamless products
Duplex and super duplex products
Nickel-based and high-temperature alloys
Broad international certification portfolio
Offshore, marine and process-industry relevance
Experience with demanding material specifications
XTD may be particularly suitable when an enquiry includes 2205, 2507, 904L, nickel alloys or project-specific approval requirements.
Recommended for: Offshore, marine, oil and gas, chemical and high-corrosion projects requiring specialized materials.
Location: Zhejiang Province
Best for: Broad stainless and nickel-alloy product ranges and larger industrial orders
Baofeng Steel Group describes itself as a large stainless steel and high-temperature nickel-alloy pipe manufacturer. Its portfolio includes stainless steel seamless pipe, welded pipe, heat-exchanger tube, coil tube, precision instrument tube, fittings and flanges.
Public company information also identifies austenitic stainless steel, duplex, super austenitic, urea-grade and nickel-based alloy products among its material capabilities.
Broad material portfolio
Seamless and welded manufacturing
Heat-exchanger and coil-tube capabilities
Pipe fittings and flange supply
Large production infrastructure
Experience with multiple international standards
Baofeng may be suitable for buyers who want to consolidate several stainless or alloy piping product categories under one supply source.
Recommended for: Chemical processing, refining, heat exchangers, energy projects and mixed-product piping packages.
Location: Jiaxing, Zhejiang Province
Best for: Marine, LNG, offshore engineering and prefabricated piping systems
Yada Green Energy Solutions takes a broader system-based approach than a conventional pipe-only mill. Its production scope includes seamless pipe, welded pipe, fittings, flanges, prefabricated piping, double-wall pipe, pressure vessels, pump towers and large modules.
The company states that it operates multiple production lines and provides services covering design, manufacturing, installation and maintenance for marine engineering, clean energy and chemical-industry customers.
Seamless and welded stainless steel pipe
Prefabricated pipe spools
Double-wall piping
Fittings, flanges and pressure equipment
Marine and LNG project experience
Integrated engineering and module capability
Yada should be evaluated as a piping-system and fabrication partner rather than only as a commodity pipe supplier.
Recommended for: Shipbuilding, LNG fuel systems, offshore platforms, prefabricated pipe modules and integrated project packages.
Location: Huzhou, Zhejiang Province
Best for: Precision, clean, bright-annealed and electropolished seamless tubing
Botong Metal Technology manufactures seamless stainless steel pipes and tubes, including hydraulic instrumentation tube, condenser tube and clean BA or EP products.
The company's public profile describes an approximately 18,000-square-metre facility, precision cold-rolling and cold-drawing equipment, and production focused on high-precision tubular products.
Precision cold-rolled and cold-drawn tubing
Bright-annealed and electropolished surfaces
Controlled internal surface roughness
Hydraulic and instrumentation tubing
Condenser and heat-exchanger tubes
Semiconductor and high-purity applications
Botong's strongest positioning is in precision tube and clean-piping applications rather than large-diameter ASTM A312 process pipe.
Recommended for: Semiconductor gas delivery, pharmaceutical systems, food processing, instrumentation and clean-fluid applications.
Location: Lishui, Zhejiang Province
Best for: Heat-exchanger, boiler and general industrial seamless tubing
Zhejiang Guanyu Steel Tube manufactures stainless steel and nickel-alloy pipes and tubes. Public company information describes production of austenitic and ferritic-austenitic products through cold-drawing and cold-rolling processes.
The company presents seamless pipe, heat-exchanger tube, precision tube, boiler tube and high-pressure tube among its product categories.
Cold-drawn and cold-rolled seamless products
Austenitic and duplex material options
Heat-exchanger and boiler tubing
Precision and high-pressure tube products
Stainless steel and nickel-alloy coverage
Export-oriented supply
Guanyu may be appropriate for buyers requiring smaller-diameter seamless tubing, heat-transfer products or standard industrial pipe and tube specifications.
Recommended for: Heat exchangers, condensers, boilers, chemical equipment and general industrial tubing.
Location: Zhejiang Province
Best for: Standard stainless steel seamless pipe and tube export orders
Zhejiang Yinlong Stainless Steel manufactures stainless steel seamless pipe, welded pipe, tubes and fittings. Public company information states that the business was founded in 2007 and supplies products to international markets for petroleum, chemical, power, water, food and other industrial applications.
Stainless steel seamless pipe and tube
Welded pipe and piping components
Austenitic and corrosion-resistant grades
Export-market experience
Products for several general industrial sectors
Standard and project-based supply
Buyers should confirm the exact manufacturing facility, available dimensional range, certificate scope and inspection package for the proposed material.
Recommended for: Standard export orders, general process piping and buyers comparing multiple China-based stainless steel pipe sources.
There is no single manufacturer that is ideal for every stainless steel pipe application.
| Purchasing Requirement | Manufacturers to Consider |
|---|---|
| Custom ASTM A312 pipe and responsive technical review | Guangxin PipeTech |
| Large energy or oil and gas project | Jiuli, Wujin |
| Duplex, super duplex or nickel alloys | Guangxin, Jiuli, XTD, Baofeng |
| Integrated pipe, fitting and flange package | Guangxin, Wujin, Tsingshan, Baofeng |
| Marine, LNG or prefabricated piping | Yada, Jiuli, XTD |
| BA, EP or high-purity precision tubing | Botong |
| Heat-exchanger and boiler tubing | Guangxin, Guanyu, Botong |
| Standard export stainless steel pipe | Guangxin, Yinlong, Guanyu |
| Large-scale diversified stainless pipe production | Jiuli, Wujin, Tsingshan, Baofeng |
This comparison should be used to create a shortlist. Final supplier approval should be based on technical and commercial evidence from the specific manufacturing facility that will produce the order.
A polished website and a low price are not enough to qualify a manufacturer for a critical piping project.
Ask the supplier to identify:
Legal name of the manufacturing company
Factory address
Production equipment
Heat-treatment facilities
Nondestructive testing equipment
Certificate holder
Mill shown on the material certificate
Whether production will be subcontracted
A supplier may legitimately work with approved partner mills, but that relationship should be disclosed before the order.
For austenitic stainless steel process pipe, ASTM A312 is a common specification. For duplex stainless steel pipe, ASTM A790 may apply. Precision and heat-exchanger tubes may instead be supplied under ASTM A269, A213 or A789.
Do not accept a quotation that describes every product simply as “ASTM stainless steel pipe.” The quotation should identify the exact standard, grade, product form and edition required by the project.
Pipe is generally purchased by nominal pipe size and Schedule, while tube is usually specified by exact outside diameter and wall thickness.
ASME B36.19 standardizes dimensions for welded and seamless wrought stainless steel pipe and distinguishes pipe dimensions from tube dimensions.
This difference affects:
Dimensional tables
Wall-thickness selection
Tolerance
Intended application
Applicable product standard
Quotation accuracy
Ask for a material list that includes the corresponding UNS or EN designation. This helps prevent confusion between commercial grade names and the actual specified alloy.
For example, "316 stainless steel" is not a complete purchasing specification. The buyer may need TP316L under ASTM A312, with a specific NPS, Schedule, heat treatment and test package.
Ask the manufacturer to describe the production route:
Billet inspection
Heating and piercing
Hot working or cold reduction
Cold drawing or cold rolling where required
Solution heat treatment
Straightening and sizing
Surface treatment
Nondestructive testing
Final inspection
Marking and packing
Heat treatment should be controlled according to the material grade and applicable product specification.
A complete inspection package may include:
EN 10204 3.1 material certificate
Chemical-composition results
Mechanical-test results
Heat-treatment record
Hydrostatic-test result
Ultrasonic or eddy-current report
PMI report
Dimensional inspection
Surface inspection
Corrosion test where specified
Third-party release note
The buyer should state which documents are mandatory before requesting a price.
A company may display many certificates, but not every certificate necessarily covers every grade, size, process or factory.
Confirm:
Certificate holder
Manufacturing address
Product scope
Material scope
Standard scope
Issue and expiry dates
Whether the certificate applies to the proposed order
For custom stainless steel seamless pipe, ask whether the manufacturer has previously produced a comparable OD, wall thickness, grade and length.
Also clarify:
Minimum production quantity
Tooling requirements
Trial-production procedure
Dimensional capability
Extra testing
Sample approval
Production lead time
Yield and pricing implications
A low unit price may exclude required testing, fixed lengths, export packing or third-party inspection.
Compare quotations on the same basis:
Material grade
Standard
Dimensions
Quantity
Unit weight
Test package
Certificate type
Surface condition
Packing
Incoterm
Delivery date
Payment terms
China offers several types of stainless steel pipe suppliers, from large listed mills to specialized factories and integrated project manufacturers.
Buyers can source standard austenitic pipe, duplex and super duplex products, nickel-alloy pipe, heat-exchanger tubing, precision tube and fabricated piping components from different specialized manufacturers.
Chinese manufacturers may be considered when a project requires:
Non-standard OD and wall thickness
Fixed or cut-to-length production
Special pipe ends
Project-specific testing
Custom marking and packing
Small or medium production batches
Combined pipe, fitting and flange packages
Customization must still be confirmed for the specific grade, size and quantity.
Several manufacturers can supply pipe together with tubes, fittings, flanges or prefabricated piping. This can reduce the number of separate purchase orders, although the buyer should still verify the original source and traceability of every product category.
Many Chinese manufacturers publicly offer products under ASTM, ASME, EN, DIN and JIS standards. However, listing a standard on a website is not sufficient evidence of compliance. The purchase order, material certificate and inspection records must match the required specification.
China's market allows buyers to compare:
Large mills for major projects
Specialized alloy manufacturers
Precision-tube factories
Integrated piping-system companies
Custom export-oriented manufacturers
This makes supplier selection more flexible, but also increases the importance of technical qualification.
Before approving a supplier, send these questions in writing.
Are you the original manufacturer of the offered pipe?
Which factory will produce the order?
What is your normal manufacturing range for this grade?
Have you previously produced this OD and wall thickness?
Which ASTM, ASME or EN standard will appear on the MTC?
Can you provide an EN 10204 3.1 or 3.2 certificate?
How is heat-number traceability maintained?
Which heat-treatment equipment will be used?
Is hydrostatic testing included?
Which UT or eddy-current standard will apply?
Can PMI be performed on each pipe?
Are corrosion tests available when specified?
Can the inspection be witnessed by a third party?
What dimensional tolerances can be guaranteed?
Can you supply fixed lengths?
How will the pipe ends be protected?
What export packing is included?
What is the manufacturing lead time?
Which documents will be submitted before shipment?
What information do you need to issue a firm quotation?
A capable supplier should provide specific answers rather than repeatedly stating that "all standards are available."
Use the following format when requesting a quotation:
| RFQ Item | Example |
|---|---|
| Product | Stainless steel seamless pipe |
| Material grade | ASTM A312 TP316L |
| Size | NPS 4 |
| Wall thickness | Schedule 40S |
| Length | 6,000 mm fixed length |
| Quantity | 20 metric tonnes |
| Pipe ends | ASME B16.25 beveled ends |
| Surface | Solution annealed and pickled |
| NDT | Hydrostatic test and UT |
| Material certificate | EN 10204 3.1 |
| Additional inspection | PMI and dimensional report |
| Packing | Seaworthy bundles with end caps |
| Destination | Houston, United States |
| Delivery term | CIF Houston |
| Required date | State project deadline |
| Attachments | Datasheet, drawing or project specification |
The more complete the RFQ, the easier it is to compare several manufacturers on an equal basis.
The best manufacturer depends on the project. Guangxin PipeTech is a practical option for custom export orders and coordinated stainless, duplex and nickel-alloy piping supply. Jiuli and Wujin may be more suitable for very large energy projects, while Botong is more specialized in precision and high-purity seamless tubing.
ASTM A312 is commonly specified for austenitic stainless steel pipe intended for high-temperature and general corrosive service. Duplex pipe may be supplied under ASTM A790. Tubing applications may require ASTM A269, A213 or A789.
Common grades include TP304, TP304L, TP316, TP316L, TP321 and TP347. Some manufacturers also produce 904L, duplex 2205, super duplex 2507 and nickel-based alloys.
Many manufacturers can review custom OD, wall thickness, fixed length, surface, pipe ends and inspection requirements. Feasibility depends on the material, size, quantity, tooling and production route.
Typical documents include an EN 10204 3.1 material certificate, chemical and mechanical test results, heat-treatment information, dimensional inspection and applicable hydrostatic or nondestructive test records.
Guangxin PipeTech supplies stainless steel, duplex stainless steel and seamless nickel alloy pipe products for international industrial projects.
To request a technical quotation, provide:
Material grade
ASTM, ASME or EN standard
NPS or outside diameter
Schedule or wall thickness
Length
Quantity
Pipe-end requirement
Required tests
Certificate type
Application
Destination
Required delivery date
For custom orders, attach the project datasheet, drawing or inspection specification. Guangxin PipeTech will review the technical requirements before confirming manufacturing feasibility, inspection scope and delivery conditions.
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