What certifications do you provide?

We provide EN 10204 3.1 inspection certificates and ISO 9001 / TS16949 certification.

What are the accepted payment terms?

We accept T/T, L/C, MoneyGram, and currencies including USD, EUR, HKD, and CNY.

What is the lead time for production?

The average lead time is one month for both peak and off-season periods.

High Quality En10305-6 Precision Cold Drawn Welded Steel Tube

Name: High Quality En10305-6 Precision Cold Drawn Welded Steel Tube
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2024817445

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.

CDW6

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

En 10305-6

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

Precision Cold Drawn Tube: High quality precision cold drawn welded steel tube meeting En10305-6 standard.

Wide Size Range: Outer diameter range from 3mm to 100mm, customizable as per request.

Multiple Steel Grades: Available in E195, 235, 275, 355, and various international standards like ASTM, JIS.

Various Surface Treatments: Options include Bright Annealing, Black Phosphating, and Galvanizing.

Strict Quality Control: 100% Eddy Current Test, size/surface checking, and EN 10204 3.1 certificates.

Flexible Delivery Conditions: Available in BK, BKW, BKS, GBK, NBK conditions to suit specific needs.

Versatile Applications: Suitable for pipeline transport, boiler pipes, hydraulic systems, and machinery.

OEM Service Available: Customization services available for standard, grade, and delivery conditions.

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: ≤5.43h 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 is the outer diameter range of the steel tubes?

The standard outer diameter range is 3mm to 100mm, but it can be customized as per your request.

Q:What steel grades are available for this product?

We offer various steel grades including E195, 235, 275, 355, and standards like St34-2, St37-2, St44-2, St52-3, and ASTM A512/A513 grades.

Q:What surface treatments are provided?

We provide Bright Annealing, Black Phosphating, and Galvanizing surface treatments.

Q:What quality tests are performed on the tubes?

We perform 100% Eddy Current Test, 100% size and surface checking, tensile strength, yield strength, elongation, flattening, flaring, and chemical analysis.

Q:What delivery conditions are available?

We offer BK (+C), BKW (+LC), BKS (+SR), GBK (+A), and NBK (+N) delivery conditions.