What is the lead time for production?

The average lead time is one month, regardless of whether it is peak season or off season.

Is OEM service available?

Yes, OEM service is available, and we can customize steel grades and delivery conditions according to your needs.

What certificates are provided with the products?

We provide ISO 9001 and TS16949 certificates, along with EN 10204 3.1 inspection reports for raw materials and finished products.

En10305-2 High Strength High Quality Cold Drawn Welded Round Steel Tube

Name: En10305-2 High Strength High Quality Cold Drawn Welded Round Steel Tube
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2119345035

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.00-7.00

1,000 kg

Product profile

Customization

Available

Type

Welded

Technique

Cold Drawn

Model NO.

E195 235 275 355

Material

Carbon Steel

Surface Treatment

Bright Annealing, Black Phosphating, Galvanizing

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry

Section Shape

Round

Standard

DIN2393 2394 En10305-2 10305-3 JIS G3445 ASTM A512

Delivery Condition

Bk (+C) Bkw (+LC) Bks (+Sr) Gbk (+a) Nbk (+N)

Steel Grade

E195/235/275/355

Secondary or Not

Non-Secondary

Certificate

ISO 9001 Ts16949

Application

Automotive, Hydraulic System and Precision Device

Transport Package

Box or Bundles

Specification

OD3-100mm

Trademark

Origin

China

HS Code

7304319000

Key features

High Precision & Smooth Surface: Free from scale, rust, and imperfections with invisible welding seams and lower roughness.

Wide Material & Standard Options: Carbon, stainless, and alloy steel available in DIN, EN, JIS, ASTM, and SAE standards.

Multiple Delivery Conditions: Available in BK, BKW, BKS, GBK, and NBK conditions to meet specific mechanical needs.

Comprehensive Quality Inspection: Includes tensile, yield, elongation, flattening, flaring, chemical analysis, and 100% eddy current test.

Versatile Industrial Applications: Suitable for automotive, hydraulic systems, machinery, propeller shafts, and shock absorbers.

Customizable Size Range: Outer diameter ranges from 3mm to 100mm, or can be customized as per request.

Certified Quality Assurance: Products come with ISO 9001, TS16949 certificates and EN 10204 3.1 inspection reports.

Advanced Manufacturing Process: Uses special oil drawing to ensure best surface condition and good mechanical performance.

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: ≤5.37h 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.