What payment terms and delivery terms are accepted?

Accepted delivery terms include FOB, CFR, CIF, EXW, DDP, and DDU. Accepted payment types are T/T and L/C, with currencies in USD, EUR, HKD, and CNY.

What is the lead time for production?

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

SAE J524 En10305-4 Mechanical Engineering Carbon Seamless Steel Pipe

Name: SAE J524 En10305-4 Mechanical Engineering Carbon Seamless Steel Pipe
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2139015185

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.

E215 235 255 355

Material

Carbon Steel

Surface Treatment

Galvanized, Black Phosphated, Ba

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Mining, Special Purpose

Section Shape

Round

Standard

DIN2391, 1630, 2445, En10305-4, SAE J524

Delivery Condition

Bk, Gbk, Bkw, Bks or Nbk

Steel Grade

St37.4 St52.4, E235, E355, A822, 1010, Cfs360

Certificate

ISO 9001 Ts16949

Secondary or Not

Non-Secondary

Application

Automotive, Hydraulic System and Precision Device

Transport Package

Bundles or Boxes

Specification

OD2-60mm

Origin

China

HS Code

7304319000

Production Capacity

1000ton/Month

Key features

High Precision & Low Roughness: Cold drawn seamless pipes with precise size control and lower roughness for inner and outer surfaces.

Wide Standard Compliance: Meets multiple international standards including DIN, EN, ASTM, SAE, JIS, and ISO for various steel grades.

Versatile Application Scope: Suitable for automotive, hydraulic systems, precision engineering, mining, and aerospace industries.

Rigorous Quality Inspection: 100% Eddy Current Test, size/surface checking, and professional inspection before delivery.

Multiple Surface Treatments: Available in Galvanized, Black Phosphated, and Ba finishes to suit different environmental needs.

Flexible Customization: Customizable standards, delivery conditions, steel grades, and certificates based on customer requirements.

Advanced Manufacturing Process: Utilizes advanced production lines and special oil drawing to ensure optimal surface condition and performance.

Certified Quality Assurance: Products certified under ISO 9001 and TS16949 with EN 10204 3.1 test reports available.

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: ≤6.53h 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?

The main advantages include high precision in size, good mechanical performance, and lower roughness for both inner and outer surfaces.

Q:Which international standards do these pipes comply with?

They comply with various standards such as DIN 2391, 1630, 2445, EN 10305-4, SAE J524, ASTM A822, JIS G3445, and ISO 8535, among others.

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

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

Q:What quality inspection items are performed on the pipes?

Inspection items include tensile strength, yield strength, elongation, flattening, flaring, chemical analysis, 100% Eddy Current Test, and 100% size and surface checking.

Q:What surface treatments are available for these pipes?

Available surface treatments include Galvanized, Black Phosphated, and Ba finishes.