Can you customize the product specifications?

Yes, we offer customization for standards (ASTM A519, EN10305-1, etc.), delivery conditions, steel grades, and certificates according to customer requirements.

What are the main applications of this tube?

It is widely used in automotive fields (fuel injection, steering columns, gear shafts) and hydraulic fields (hydraulic circuits, cylinders, suspension systems), as well as for heat exchangers and high-precision machines.

What are the payment terms?

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

ASTM A519 Cold Drawn Seamless Steel Tube for Mechanical Application

Name: ASTM A519 Cold Drawn Seamless Steel Tube for Mechanical Application
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 919579935

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 tube

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

High Precision Seamless: Cold drawn seamless steel tube with high precision for automotive and hydraulic applications.

Wide Steel Grade Options: Available in 1010, 1020, 1045, 4130, 4140, ST35, ST45, ST52, E235, E355 and more.

Multiple Surface Treatments: Bright, black phosphated, galvanizing (silver, yellow, olive green) with 8-20um thickness.

Diverse Delivery Conditions: BK, BKW, BKS, GBK, NBK options for cold finished, annealed, or normalized states.

Strict Quality Control: Double inspected by professional controllers with EN 10204 3.1 certificates and vivid reports.

Versatile Applications: Suitable for fuel injection lines, hydraulic cylinders, steering columns, and shock absorbers.

Customization Available: Customized standards, delivery conditions, steel grades, and certificates on request.

Reliable Manufacturer: Established in 2010, 150,000 sqm area, with ISO 9001 and TS16949 certifications.

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: ≤5.43h 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 available steel grades?

Common grades include 1010, 1020, 1045, 4130, 4140, ST35, ST45, ST52, E235, E255, E355, and many others. Customized or modified steel grades are available upon request.

Q:What surface treatments are offered?

We offer bright, black phosphated, and galvanizing treatments. Galvanizing includes silver, yellow, and olive green coatings with a layer thickness of 8-20um and salty spray test resistance of 48-150 hours.

Q:What are the delivery conditions?

Tubes are delivered in BK (cold finished/hard), BKW (cold finished/soft), BKS (stress relieve annealed), GBK (annealed), or NBK (normalized) conditions.

Q:What certifications do you provide?

We provide ISO 9001 and TS16949 certifications. Test reports are available according to EN 10204 3.1, including chemical, mechanical, and technological tests.

Q:What is the lead time for orders?

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