What are the available material grades?

We offer Carbon Steel, Alloy Steel, and Stainless Steel grades such as St35/45/52, 1010/1045, 304/316L, and various JIS/EN standards.

What are the size ranges available?

Outer diameters range from 2mm to 60mm with wall thicknesses from 0.3mm to 10mm, and specific inner diameter options for certain standards.

What certifications do you have?

Our products come with ISO 9001, TS16949 certificates, and EN 10204 3.1 test reports.

DIN 2391 St52 Cold Rolled Seamless High Precision Steel Pipe

Name: DIN 2391 St52 Cold Rolled Seamless High Precision Steel Pipe
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2020217935

Jiangsu, ChinaZhangjiagang Chewit International Co., Ltd.

US$1.00-7.00

1,000 kg

Product profile

Customization

Available

Type

Seamless

Technique

Cold Rolled

Model NO.

ST35 45 52

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

Section Shape

Round

Standard

DIN 2391

Delivery Condition

Bkw, Bks, +LC, +Sr

Steel Grade

St35/45/52

Secondary or Not

Non-Secondary

Certificate

ISO 9001 Ts16949

Application

Automotive,Hydraulic System and Precision Device

Transport Package

Box or Bundles

Specification

OD: 5- 250mm ID: 3- 200mm

Trademark

Origin

China

HS Code

7304319000

Key features

High Precision Manufacturing: Cold drawn seamless steel pipe with precision in size and lower roughness for inner and outer surfaces.

Wide Material Selection: Available in Carbon Steel, Alloy Steel, and Stainless Steel grades including St35/45/52 and 304/316.

Comprehensive Standards Compliance: Meets DIN 2391, ASTM A519, EN 10305, JIS G3445, and GB/T 8162 standards for global applicability.

Diverse Surface Treatments: Options include Bright Annealing, Black Phosphating, and Galvanizing for enhanced corrosion resistance.

Rigorous Quality Inspection: 100% Eddy Current Test, Size and surface checking, plus tensile strength and chemical analysis verification.

Extensive Application Scope: Ideal for automotive powertrains, hydraulic systems, aerospace, heat exchangers, and construction machinery.

Flexible Delivery Conditions: Available in BK, BKW, BKS, GBK, and NBK conditions to suit specific project requirements.

OEM Service Availability: OEM service is available to customize products according to specific customer technical drawings.

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: ≤5.50h 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:Who are we?

We are based in Jiangsu, China, established in 2010, with a team of 11-50 people in our office.

Q:How can you guarantee quality?

We always produce a pre-production sample before mass production and conduct a final inspection before shipment.

Q:What products can you buy from us?

We supply Steel Pipe, Seamless Pipe, Hydraulic Oil Tube, Precision Tube, and Stainless Steel Tube.

Q:Why should you buy from us not from other suppliers?

We use advanced production lines with special oil for best surface conditions, ensuring lower roughness and good mechanical performance, backed by professional inspection teams.

Q:What services can you provide?

We accept delivery terms like FOB, CFR, CIF, EXW, DDP, DDU; payment currencies USD, EUR, HKD, CNY; and payment types T/T, L/C, MoneyGram.