What quality certifications do you hold?

Our products comply with ASTM A519, EN10305, DIN1629, DIN1630 standards and we hold ISO 9001 and Ts16949 certificates.

What is the lead time for production?

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

What payment terms do you accept?

We accept LC (Letter of Credit) and T/T (Telegraphic Transfer) as terms of payment.

ASTM A519 Cold Drawn Seamless Steel Pipe for Mechanical Application

Name: ASTM A519 Cold Drawn Seamless Steel Pipe for Mechanical Application
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 919585435

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.50-5.00

1,000 kg

Product profile

Customization

Available

Type

Seamless

Technique

Cold Drawn

Model NO.

steel pipe

Material

Carbon Steel

Surface Treatment

Bright, Black Phosphated, Galvanizing

Usage

Hydraulic/Automobile Pipe

Section Shape

Round

Standard

ASTM A519 En10305-1, En10305-4, DIN1629

Delivery Condition

Cw, Sr, a, N

Steel Grade

1010/1015/1025/1030/1045/4130/4140/etc

Certificate

ISO 9001 Ts16949

Secondary or Not

Non-Secondary

Application

Automotive Industry, Hydraulic System, Other Indus

Transport Package

Plywood Box or Budles

Specification

OD2mm -60mm

Trademark

Origin

China

HS Code

7304319000

Key features

Wide Steel Grade Range: Available in 1010, 1015, 1025, 1030, 1045, 4130, 4140, ST35, ST45, ST52, E235, E255, E355 and more.

Multiple Delivery Conditions: Options include Cold finished/hard (BK), Cold finished/soft (BKW), Stress relieve annealed (BKS), Annealed (GBK), and Normalized (NBK).

Customized Surface Treatment: Offers Bright, Black Phosphated, Galvanizing (Silver, Yellow, Olive green) with layer thickness 8-20um.

High Precision Manufacturing: Cold drawn seamless technique ensures high precision suitable for automotive and hydraulic applications.

Comprehensive Quality Testing: All tubes checked per production standard with chemical, mechanical, and technological tests available.

Diverse Application Scope: Ideal for fuel injection lines, CNG tubes, steering columns, hydraulic circuits, and shock absorbers.

International Standard Compliance: Meets ASTM A519, EN10305, DIN1629, DIN1630, and ISO 9001/Ts16949 certification requirements.

OEM Service Available: Customized modified steel grades and specific requirements 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: ≤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:What steel grades are available for this pipe?

We offer a wide range including 1010, 1015, 1025, 1030, 1045, 4130, 4140, ST35, ST45, ST52, E235, E255, E355, and other customized modified grades.

Q:What delivery conditions are offered?

Precision tubes are delivered in BK (Cold finished/hard), BKW (Cold finished/soft), BKS (Stress relieve annealed), GBK (Annealed), and NBK (Normalized) conditions.

Q:What surface treatments are available?

Options include Bright, Black Phosphated, and Galvanizing (Silver, Yellow, Olive green) with a layer thickness of 8-20um and salt spray resistance of 48-150 hours.

Q:What are the main applications for this pipe?

It is used in automotive fields like fuel injection lines and CNG tubes, hydraulic fields for circuits and cylinders, and other machinery requiring high precision.

Q:Do you offer customized steel grades?

Yes, many other steel grades and customized modified steel grades are available on request to meet specific customer needs.