What is the average lead time for production?

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

What testing procedures are performed on the tubes?

All tubes are checked according to relevant production standards, including chemical, mechanical, and technological tests.

What are the main applications for these tubes?

They are used in automotive fuel injection, hydraulic circuits, hydraulic cylinders, shock absorbers, and various high-precision machines.

SAE J524 Hydraulic Precision Seamless Steel Pipe

Name: SAE J524 Hydraulic Precision Seamless Steel Pipe
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2025713045

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.50-5.00

1,000 kg

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

Type

Seamless

Technique

Cold Drawn

Usage

Hydraulic/Automobile Pipe

Section Shape

Round

Standard

DIN 2391, En10305-1, En10305-4, SAE J524

Delivery Condition

Bk, Gbk, Bkw, Bks or Nbk

Steel Grade

St35, St37, St37.4, E235, E355, St45, St52.4, 1010

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/ 0.125-1.5inch

Trademark

Origin

China

HS Code

7304319000

Key features

High Precision Seamless Construction: Cold drawn precision seamless tube designed for hydraulic and automotive applications.

Wide Steel Grade Selection: Available in St35, St37, E235, E355, 1010, and many other customized modified grades.

Multiple Delivery Conditions: Offered in BK, GBK, BKS, GBK, and NBK conditions to suit specific mechanical needs.

Advanced Surface Treatments: Options include silver/yellow galvanizing and black phosphate with 8-20um thickness.

Comprehensive Standard Compliance: Meets DIN 2391, EN10305, SAE J524, ASTM, and GB/T standards with ISO 9001 certification.

Robust Mechanical Performance: High tensile strength and elongation properties suitable for high-pressure hydraulic systems.

OEM Service Availability: Customized steel grades and modified specifications available upon request.

Rigorous Quality Testing: All tubes undergo chemical, mechanical, and technological tests per relevant standards.

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: ≤5.21h 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 delivery conditions?

Precision tubes are delivered in BK (cold finished/hard), GBK (annealed), BKS (stress relieve annealed), GBK (cold finished/soft), and NBK (normalized) conditions.

Q:Which steel grades are available for this product?

Standard grades include St35, St37, E235, E355, and 1010. Many other customized and modified steel grades are available upon request.

Q:What surface treatments are offered?

Additional treatments include silver galvanized, yellow galvanized, olive green coated (8-20um thickness), and black phosphate.

Q:What standards does the product comply with?

The product complies with DIN 2391, EN10305-1, EN10305-4, SAE J524, ASTM, and GB/T standards, with ISO 9001 and TS16949 certificates.

Q:Is OEM service available?

Yes, OEM service is available, and customized steel grades can be modified according to specific requirements.