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We conduct a pre-production sample check, final inspection before shipment, and 100% Eddy Current Test. We also perform Tensile, Yield, Elongation, Flattening, and Chemical Analysis tests.

What delivery conditions are available?

Available delivery conditions include BK (+C), BKW (+LC), BKS (+SR), GBK (+A), and NBK (+N).

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Small Diameter Cold Drawn Seamless Steel Pipe for Fine Medical Equipment

Name: Small Diameter Cold Drawn Seamless Steel Pipe for Fine Medical Equipment
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2137431795

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.

St35 45 52

Material

Carbon and Stainless

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

DIN 2391 1629 1630 2445 73000 /En 10305-1/10305-4

Delivery Condition

Bk, Gbk, Bkw, Bks or Nbk

Steel Grade

St35 45 52 37.4 44.4 52.4 E215 235 255 355

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

Wide Material & Grade Options: Available in Carbon, Alloy, and Stainless Steel with various grades like St35, 45, 52, 304, 316L, etc.

Comprehensive Standard Compliance: Meets multiple international standards including DIN, EN, ASTM, JIS, GB/T, and ISO for global use.

100% Quality Inspection: Rigorous testing including Tensile, Yield, Flattening, Chemical Analysis, and 100% Eddy Current Test.

Versatile Application Scope: Suitable for Automotive, Hydraulic Systems, Precision Devices, Heat Exchangers, and Aerospace industries.

Customizable Delivery Conditions: Offers various delivery conditions such as BK, GBK, BKS, NBK to meet specific project requirements.

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

Flexible OEM/ODM Service: Supports customized steel grades, sizes, and surface treatments for specific customer needs.

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 main advantages of these cold drawn seamless steel pipes?

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

Q:What materials and steel grades are available?

Materials include Carbon Steel, Alloy Steel, and Stainless Steel. Common grades are St35, 45, 52, 37.4, 44.4, 52.4, E215, 235, 255, 355, and stainless grades like 304, 304L, 316, 316L.

Q:What standards do these pipes comply with?

They comply with various international standards including DIN 2391, EN 10305-1/4, ASTM A822/A179/A519/A269, JIS G3445/G3455, GB/T 8162/8163/3639/3093, ISO 8535, NF A49-310, BS 3602, and 6323.

Q:What are the typical size ranges for OD and WT?

The Outer Diameter (OD) ranges from 2mm to 60mm, and Wall Thickness (WT) ranges from 0.3mm to 10mm. For some standards, ID ranges from 1mm to 12.5mm.

Q:What are the primary applications for these pipes?

Primary applications include Automotive (fuel lines, hydraulic systems), Precision Engineering, Heat Exchangers, Mining Machinery, Aerospace, and General Pipeline Transport.