What are the available dimensions for the tubes?

Outer Diameter ranges from 10mm to 55mm and Wall Thickness from 1.5mm to 4mm depending on the standard.

What standards do your tubes comply with?

Our tubes comply with standards such as EN 10305-3, GB/T 3639, DIN 2391, and DIN 2394.

Customized Cold Drawn Seamless Tubes for Motorcycle Shock Absorbers

Name: Customized Cold Drawn Seamless Tubes for Motorcycle Shock Absorbers
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2052180555

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.

ST34-2 37-2 44-2 52-3

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

DIN 1629

Delivery Condition

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

Steel Grade

St37/44/52

Secondary or Not

Non-Secondary

Certificate

ISO 9001 Ts16949

Application

Automotive,Hydraulic System and Precision Device

Transport Package

Box or Bundles

Specification

OD2 - 60mm WT0.3 -10mm

Trademark

Origin

China

HS Code

7304319000

Key features

High Precision Cold Drawn: Smooth surface free from scale, rust, and imperfections with high precision for size.

Invisible Welding Seam: Welding seam is invisible and untouchable ensuring superior structural integrity.

Comprehensive Surface Treatment: Options include Oiled, Bright Annealing, Black Phosphating, and Galvanizing.

Strict Quality Inspection: 100% Eddy Current Test and Size/Surface checking with EN 10204 3.1 certificates.

Wide Material Selection: Available in St37/44/52, 20#, 16Mn, E255, E355, and other materials per request.

Diverse Application Scope: Suitable for Automotive, Hydraulic Systems, Aerospace, and Marine industries.

Flexible Delivery Conditions: Options include BK, BKW, BKS, GBK, NBK, and Cold Drawn/Rolled states.

OEM Service Available: Customized solutions available for specific dimensions and material requirements.

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: ≤5.35h 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:Who are we?

We are based in Jiangsu, China, established in 2010, with 11-50 office staff and sales in Eastern Asia, Mid East, Eastern Europe, Southeast Asia, Northern Europe, and other regions.

Q:How can you guarantee quality?

We always produce a pre-production sample before mass production and conduct a final inspection before shipment.

Q:What products can you buy from us?

We supply Steel Pipe, Seamless Pipe, Hydraulic Oil Tube, Precision Tube, and Stainless Steel Tube.

Q:Why should you buy from us not from other suppliers?

We have advanced production lines with special oil for best surface condition, lower roughness, good mechanical performance, and a professional inspection team.

Q:What services can you provide?

We accept delivery terms FOB, CFR, CIF, EXW, DDP, DDU; payment in USD, EUR, HKD, CNY via T/T, L/C, MoneyGram; and speak English, Chinese, Spanish, Japanese.