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Cold Drawn Precision Stainless Welded Steel Tube for Boiler
US$3.00-10.00
500 kg
Product profile
Customization
AvailableType
WeldedTechnique
Arc WeldingModel NO.
STW-17Material
Stainless SteelSurface Treatment
Ba, PolishUsage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Mining, Special PurposeSection Shape
RoundStandard
ASTM A269 ,A312, A249 ,A554 ,A789,A790,A268Delivery Condition
Ba, PolishSteel Grade
304, 304L, 316, 316LCertificate
ISO 9001 Ts16949Secondary or Not
Non-SecondaryApplication
Precision ApplicationTransport Package
Bundles or BoxesSpecification
OD0.1- 60mmOrigin
ChinaHS Code
7306610000Key features
Precision Tolerance: OD and ID tolerance controlled within +/-0.05mm for high precision applications.
Advanced Surface Treatment: Sophisticated bright annealing technology ensures excellent mechanical performance and surface quality.
Flexible Customization: Other sizes, grades, and special tolerances are available upon request.
Wide Material Selection: Available in 304, 304L, 316, and 316L stainless steel grades meeting ASTM and GB standards.
Versatile Application: Suitable for boilers, hydraulic systems, automotive, aerospace, and food/beverage industries.
Multiple Delivery Forms: Supplied in coils, long straight pieces, or short lengths based on customer requirements.
Strict Quality Control: Double inspection by professional quality controllers ensures product reliability and safety.
Comprehensive Certification: Products comply with ISO 9001, TS16949, and various ASTM/GB standards.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: OEM Service AvailableExport Year: 2013-08-01 CertifiedNearest Port: shanghaiAverage Response Time: ≤4.74h CertifiedTerms of Payment: LC, T/T
AI-Powered supplier vetting
SummaryZhangjiagang Chewit is a China-based limited trading company established in 2010, with stated precision-tube and steel-forging manufacturing activities. The supplier reports ISO9001:2015 certification, more than 10 production lines, approximately 5,000 tons of annual seamless-steel-pipe productivity, broad export-market coverage, and one-month lead times in both peak and off-peak seasons. Its quality claims include 100% dimensional and surface checks, batch chemical and mechanical testing, and non-destructive testing upon request. Evidence is insufficient to assess after-sales service, financial credibility, and customization capability. Innovation evidence is limited to an associated forging operation reporting 11 authorized patents, while customer evidence consists of one listed buyer and one trade transaction.
Supplier typeThe supplier is identified as a China-based limited company and trade company, with stated manufacturing activities in precision steel tubes and forgings. Its product scope includes seamless, welded, carbon, stainless, hydraulic, cold-drawn, and precision tubes, indicating a specialized steel-product supplier with both trading and manufacturing positioning.
CertificationsThe supplier explicitly reports an ISO9001:2015 management-system certificate. It also describes inspection and industry-related qualifications associated with its forging operation, including API 20B, PED, and classification-society credentials, although the scope and holder of each qualification are not separately specified.
R&D capabilityThe supplier describes advanced production and inspection equipment, precision-tube manufacturing, and a forging operation with 11 authorized patents, including three invention patents. These statements provide explicit but limited evidence of process and product-development capability, mainly linked to the forging operation rather than clearly to the entire supplier entity.
Production capacityThe supplier reports more than 10 production lines, annual seamless-steel-pipe productivity of 5,000 tons, heat-treatment furnaces, inspection equipment, and manufacturing of precision tubes and forgings. The descriptions also cite a 10,000-square-meter tube operation and a substantially larger forging facility, although employee and facility figures are inconsistent across slices and should be verified.
Client casesThe supplier states that it serves wind power, oil and gas, transportation, shipbuilding, and gearbox sectors and has entered the global purchasing system of a major company since 2006. The trade data identifies one buyer and one transaction, so sector references are available but the breadth and depth of verifiable customer cases remain limited.
Product Q&A
Q:What stainless steel grades are available?
A:
We provide 304, 304L, 316, and 316L stainless steel grades, compliant with ASTM A269, A312, A249, A554, and GB/T 12770 standards.
Q:What is the tolerance for OD and ID?
A:
The standard tolerance is OD +/-0.05mm and ID +/-0.05mm. Other special tolerances are available upon request.
Q:Can the tubes be customized in size and shape?
A:
Yes, other sizes, grades, and special tolerances are available upon request. We also offer custom delivery forms like coils or straight pieces.
Q:What surface treatments are offered?
A:
We offer Ba finish, polishing, bright annealing, annealing & pickling, bright annealing + fine polishing, and electropolishing.
Q:What are the main applications for these tubes?
A:
They are widely used in boiler pipes, hydraulic/automobile pipes, oil/gas drilling, food/beverage, medical, aerospace, and heat exchangers.
Send Inquiry
*To:
Zhangjiagang Chewit International Co., Ltd.
Zhangjiagang Chewit International Co., Ltd.*Content:
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