What are the available standards for the steel tubes?

Standards include DIN2393, DIN2394, EN10305-2/3/5/6, SAE J525, JIS G3445, ASTM A512/A513, NF A49-341, and BS 6323.

What is the size range for the steel tubes?

The size range is OD3 - 100mm or as per request for various standards.

What is the lead time for production?

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

En 10305-2/10305-3 Welding Bending Cold Drawn Steel Pipe

Name: En 10305-2/10305-3 Welding Bending Cold Drawn Steel Pipe
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2112602304

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.50-5.00

500 kg

Product profile

Customization

Available

Type

Welding and Then Cold Drawn or Cold Roll

Technique

Cold Rolled

Model NO.

CO-14

Material

Carbon Steel

Surface Treatment

Bright Annealing,Black Phosphated,Galvanizing

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling

Section Shape

Round

Transport Package

Bundles or Boxes

Specification

as per standard or request

Origin

China

HS Code

7304319000

Production Capacity

1000ton/Month

Key features

High Precision Manufacturing: OD and ID tolerance can be +/-0.03mm or as per request.

Wide Material Selection: Available in ST34.2, ST37.2, ST44.2, E195, E235, E355, and others upon request.

Multiple Surface Treatments: Options include Bright Annealing, Black Phosphated, and Galvanizing.

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

Comprehensive Standards Compliance: Meets DIN2393, DIN2394, EN10305, SAE J525, ASTM, and JIS standards.

Advanced Production Process: Cold rolled with special oil drawing for low roughness and best surface condition.

Flexible Delivery Terms: Accepts FOB, CFR, CIF, EXW, DDP, and DDU terms.

OEM Service Available: Customized sizes and specifications available upon request.

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: ≤7.52h 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, started from 2010, and sell to Eastern Asia, Mid East, Eastern Europe, Southeast Asia, Northern Europe, Domestic Market, South America, Western 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 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 drawing for best surface condition, low roughness, good mechanical performance, and a professional inspection team.

Q:What services can you provide?

We accept delivery terms like FOB, CFR, CIF, EXW, DDP, DDU; payment currencies USD, EUR, HKD, CNY; and payment types T/T, L/C, MoneyGram.