What surface treatments are available?

We provide Bright Annealing, Black Phosphating, and Galvanizing to enhance surface quality and corrosion resistance.

What are the accepted payment terms?

We accept T/T, L/C, MoneyGram, and currencies including USD, EUR, HKD, and CNY.

What is the lead time for production?

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

Od 20mm Wt 2.5mm Smooth Surface Carbon Seamless Steel Tubing

Name: Od 20mm Wt 2.5mm Smooth Surface Carbon Seamless Steel Tubing
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2128468455

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.

A822 A179 1010 1012 1025

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

ASTM A822-A450 A179-A450 A519

Delivery Condition

Bk, Gbk, Bkw, Bks or Nbk

Steel Grade

A822 A179 1010 1012 1025

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 & Smooth Surface: Cold drawn process ensures precise size, low roughness, and excellent mechanical performance.

Wide Standard Compliance: Meets ASTM, DIN, GB, EN, JIS, and ISO standards for diverse global applications.

Versatile Material Options: Available in Carbon Steel, Alloy Steel, and Stainless Steel grades like 1010, 304, 316L.

Comprehensive Quality Control: 100% Eddy Current Test, size/surface checking, and EN 10204 3.1 certificates provided.

Broad Application Scope: Ideal for automotive, hydraulic systems, heat exchangers, mining, and aerospace industries.

Flexible Surface Treatment: Options include Bright Annealing, Black Phosphating, and Galvanizing for corrosion resistance.

Customizable Specifications: OD ranges from 2-60mm and WT from 0.3-10mm, tailored to specific customer requirements.

Reliable Manufacturer: Established in 2010 with advanced production lines and strict quality inspection teams.

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: ≤4.32h 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 material grades?

We offer Carbon Steel, Alloy Steel, and Stainless Steel. Specific grades include 1010, 1025, 304, 316L, ST35, ST52, and more depending on the standard.

Q:What is the size range for the tubing?

The Outer Diameter (OD) ranges from 2mm to 60mm, and Wall Thickness (WT) ranges from 0.3mm to 10mm.

Q:Which international standards do you comply with?

Our products comply with ASTM A822/A179/A519, DIN 2391, GB/T 8162, EN 10305-1, JIS G3445, and ISO 8535 standards.

Q:What quality inspections are performed?

We perform 100% Eddy Current Test, size and surface checking, tensile strength, yield strength, elongation, flattening, and flaring tests.

Q:What are the common applications for this tubing?

It is widely used in automotive powertrain systems, hydraulic and pneumatic lines, heat exchangers, mining machinery, and aerospace.