Which industries can use these tubes?

They are suitable for electric heaters, food and beverage, petroleum, marine, medical, automotive, aerospace, and more.

What certifications do your products have?

Our products comply with ASTM standards (A269, A312, etc.) and hold ISO 9001 and TS16949 certifications.

Is OEM service available?

Yes, OEM service is available to meet specific customer branding and manufacturing needs.

ASTM 312 High Precision Stainless Steel Welded Round Tube Pipes

Name: ASTM 312 High Precision Stainless Steel Welded Round Tube Pipes
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2020156755

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$3.00-10.00

500 kg

Product profile

Customization

Available

Type

Welded

Technique

Arc Welding

Model NO.

STW-2

Material

Stainless Steel

Surface Treatment

Ba, Polish

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Mining, Special Purpose

Section Shape

Round

Standard

ASTM A269 ,A312, A249 ,A554 ,A789,A790,A268

Delivery Condition

Ba, Polish

Steel Grade

304, 304L, 316, 316L

Certificate

ISO 9001 Ts16949

Secondary or Not

Non-Secondary

Application

Precision Application

Transport Package

Bundles or Boxes

Specification

OD0.1- 60mm

Origin

China

HS Code

7306610000

Key features

High Precision Tolerance: OD and ID tolerance within +/-0.05mm for superior dimensional accuracy.

Sophisticated Bright Annealing: Advanced technology ensures excellent mechanical performance and surface finish.

Flexible Customization: Other sizes, grades, and special tolerances available upon request.

Wide Material Range: Available in 304, 304L, 316, 316L, and SUS316L stainless steel grades.

Versatile Surface Finish: Options include Bright Annealed, Polished, Annealed & Pickled, and Electropolishing.

Multiple Delivery Forms: Available in coils, long length straight pieces, or short length pieces.

Strict Quality Control: Double inspection by professional controllers with vivid test reports provided.

Comprehensive Certifications: Complies with ASTM A269, A312, A249, A554, A789, A790, A268, and ISO 9001.

Company profile

Zhangjiagang Chewit International Co., Ltd.

Jiangsu, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: OEM Service AvailableExport Year: 2013-08-01 CertifiedNearest Port: shanghaiAverage Response Time: ≤6.33h 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.