What payment terms and currencies are accepted?

Accepted payment types include T/T and L/C. Currencies accepted are USD, EUR, HKD, and CNY.

What are the accepted delivery terms?

We accept FOB, CFR, CIF, EXW, DDP, and DDU delivery terms.

What is the lead time for production?

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

0.3mm-10mm Cold Drawn Precision Seamless Alloy Steel Tubing

Name: 0.3mm-10mm Cold Drawn Precision Seamless Alloy Steel Tubing
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2134513515

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$2.50-7.00

1,000 kg

Product profile

Customization

Available

Type

Seamless

Technique

Cold Drawn

Model NO.

4130 4140 42CrMo 30CrMo

Material

Alloy Steel

Surface Treatment

Slightly Oiled

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry

Section Shape

Round

Delivery Condition

Bk (+C) Bkw (+LC) Bks (+Sr) Gbk (+a) Nbk (+N)

Steel Grade

4130/30CrMo/4140/42CrMo

Certificate

ISO 9001 Ts16949

Secondary or Not

Non-Secondary

Standards

ASTM A519

Application

Automotive, Motorcycle, Motorbike, Auto Parts

Transport Package

Bundles or Boxes

Specification

OD2-60mm

Origin

China

HS Code

7304511001

Key features

High Strength Alloy Steel: 4140/4130 Chromoly steel offers superior tensile strength, toughness, and impact resistance.

Precision Cold Drawn: Cold drawn technique ensures tight tolerances, smooth surface, and excellent mechanical performance.

Versatile Delivery Conditions: Available in BK, BKS, GBK, NBK, and QT states to meet specific heat treatment needs.

Wide Application Range: Suitable for automotive, aerospace, hydraulic tools, oil/gas drilling, and heavy industrial machinery.

Strict Quality Control: Double inspection by professional controllers with vivid test reports before shipment.

Customizable Specifications: Customizable steel grades (4130/4140), delivery conditions, and certificates (ISO 9001/Ts16949).

Standard Compliance: Manufactured strictly according to ASTM A519 standard for seamless alloy steel tubing.

Professional Manufacturing: Advanced production lines with special oil drawing for low roughness and best surface condition.

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: ≤7.35h 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 are the main advantages of 4140/4130 alloy steel tubing?

It offers high tensile strength, toughness, and resistance to fracturing, abrasion, and impact, making it ideal for high-stress applications.

Q:What delivery conditions are available for this tubing?

Options include Cold drawn/hard (+C), Cold drawn/soft (+LC), Stress relieved (+SR), Annealed (+A), Normalized (+N), and Quenched and Tempered (QT).

Q:What standards does this product comply with?

The product complies with ASTM A519 standard for seamless alloy steel tubing.

Q:How do you guarantee product quality?

We provide a pre-production sample before mass production and conduct a final inspection before shipment. All products undergo double inspection by professional quality controllers.

Q:What are the common applications for this steel tubing?

It is widely used in automotive, motorcycle, hydraulic tools, aerospace, oil and gas industries, and heavy-duty industrial machinery.