What are the available delivery conditions?

Tubes can be produced in BK (Cold finished/hard), BKW (Cold finished/soft), BKS (Stress relieve annealed), GBK (Annealed), or NBK (Normalized).

What standards do your steel grades follow?

We comply with standards including DIN 2393, EN 10305, JIS G3445, ASTM A512/A513, SAE J525, NF A49-341, and BS 6323.

What is the minimum order quantity?

The minimum order quantity (MOQ) is 1 ton.

High Quality Seamless Cold Drawn Carbon Steel Tubes for Structural Use

Name: High Quality Seamless Cold Drawn Carbon Steel Tubes for Structural Use
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 1920243686

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1,000.00-1,800.00

1 Ton

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

En 10305-2/10305-3/10305-5/10305-6

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

Product Name

Carbon Welded Steel Pipes

MOQ

1ton

Transport Package

Box or Bundles

Specification

OD3-100mm

Trademark

Origin

China

HS Code

7304319000

Key features

High Precision & Smooth Surface: Free from scale and rust with invisible welding seams and low surface roughness.

Wide Material Selection: Available in carbon steel, stainless steel, and alloy steel as per customer request.

Multiple Delivery Conditions: Options include BK, BKW, BKS, GBK, and NBK to suit various mechanical needs.

Comprehensive Quality Testing: Includes tensile strength, yield strength, elongation, flattening, flaring, and 100% eddy current tests.

Strict Quality Control: Pre-production samples and final inspections are conducted before every shipment.

Global Market Experience: Serving Eastern Asia, Middle East, Europe, and other regions since 2010.

Advanced Manufacturing: Utilizes special oil drawing processes to ensure optimal surface conditions.

Flexible Payment Terms: Accepts T/T, L/C, MoneyGram, USD, EUR, HKD, and CNY.

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, selling to global markets including Eastern Asia, Middle East, and Europe.

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 use advanced production lines with special oil for best surface conditions, low roughness, good mechanical performance, and professional inspection teams.

Q:What services can you provide?

We accept delivery terms like FOB, CFR, CIF, EXW, DDP, DDU, and payment types including T/T, L/C, and MoneyGram in multiple currencies.