What are the accepted payment terms and currencies?

We accept T/T and L/C payments in USD, EUR, HKD, and CNY. Delivery terms include FOB, CFR, CIF, EXW, DDP, and DDU.

What is the lead time for production?

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

Can the steel grade and delivery condition be customized?

Yes, we offer customizable steel grades (e.g., St35, St45, St52) and delivery conditions (BK, GBK, BKS, etc.) based on customer requirements.

DIN 73000 Carbon Seamless Steel Pipe for Mechanical Construction

Name: DIN 73000 Carbon Seamless Steel Pipe for Mechanical Construction
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2127597135

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.50-7.00

1,000 kg

Product profile

Customization

Available

Type

Seamless

Technique

Cold Drawn

Model NO.

DIN 73000 ST35/45/52/37.4/44.4/52.4

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, Mining, Heat Exchanger

Section Shape

Round

Standard

DIN2391, En 10305-1, JIS G3445, ASTM A519

Delivery Condition

Bk, Gbk, Bkw, Bks or Nbk

Steel Grade

DIN 73000 St35/45/52/37.4/44.4/52.4

Certificate

ISO 9001 Ts16949

Secondary or Not

Non-Secondary

Application

Automotive, Hydraulic System and Precision Device

Transport Package

Plywood Box or Bundles

Specification

OD2-60mm

Trademark

Origin

China

HS Code

7304319000

Key features

High Precision & Low Roughness: Cold drawn process ensures precise size, low inner/outer surface roughness, and excellent mechanical performance.

Wide Standard Compliance: Meets DIN 73000, EN 10305-1, JIS G3445, ASTM A519, and other international standards for seamless pipes.

Versatile Application Scope: Ideal for automotive, hydraulic systems, precision engineering, heat exchangers, and mining machinery.

Rigorous Quality Inspection: 100% Eddy Current Test, size/surface check, and professional pre-production samples before mass production.

Multiple Surface Treatments: Available with Bright Annealing, Black Phosphating, or Galvanizing to suit specific environmental needs.

Flexible Delivery Conditions: Offers BK, GBK, BKW, BKS, or NBK conditions to match specific mechanical and thermal requirements.

Certified Manufacturing: ISO 9001 and TS16949 certified with EN 10204 3.1 certificates for guaranteed material traceability.

Customizable Specifications: OD ranges from 2-60mm and WT from 0.3-10mm, with customizable steel grades 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: ≤6.72h 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 are the main advantages of these cold drawn seamless steel pipes?

They offer high precision in size, low roughness on both inner and outer surfaces, and excellent mechanical performance suitable for demanding applications.

Q:Which international standards do these pipes comply with?

The pipes comply with major standards including DIN 73000, EN 10305-1, JIS G3445, ASTM A519, GB/T 8162, and others.

Q:What are the typical applications for these steel pipes?

They are widely used in the automotive industry, hydraulic and pneumatic systems, precision engineering, heat exchangers, mining machinery, and aerospace.

Q:How is quality guaranteed during production and delivery?

We conduct 100% Eddy Current Tests and size/surface checks, provide pre-production samples, and perform final inspections before shipment.

Q:What surface treatments are available for these pipes?

Available surface treatments include Bright Annealing, Black Phosphating, and Galvanizing to enhance corrosion resistance and appearance.