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En/DIN/ASTM/ISO/BS/Bae International Standard Carbon Custom Steel Poster Tube Pipe
US$1.00-7.00
1,000 kg
Product profile
Customization
AvailableAfter-sales Service
1 YearWarranty
1 YearModel NO.
10# 20# 35# 45#Type
WeldedTechnique
Cold RolledMaterial
Carbon SteelSurface Treatment
Bright Annealing,Black Phosphating,GalvanizingUsage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical IndustrySection Shape
RoundStandard
DIN/En/ASTM/SAE/NF/BSDelivery Condition
Bk (+C) Bkw (+LC) Bks (+Sr) Gbk (+a) Nbk (+N)Steel Grade
St34-2/E235/1010/Ts37A/Cws2/Low Carbon SteelCondidtion
NewCertificate
ISO 9001 Ts16949Application
Automotive,Hydraulic System and Precision DeviceName
High Quality Steel PipeKeywords
High QualityLength
6m, as Per RequestShape
RoundOuter Diameter
3-100mmOiled or Non-Oiled
Slightly OiledInvoicing
by Actual WeightProcessing Service
CuttingDelivery Time
31-45 DaysTransport Package
Box or BundlesSpecification
OD3-100mmTrademark
CWOrigin
ChinaHS Code
7304319000Key features
Wide Standard Compliance: Meets DIN, EN, ASTM, ISO, BS, and SAE international standards for global applicability.
Customizable Dimensions: Outer diameter ranges from 3mm to 100mm with length available as per customer request.
Multiple Surface Treatments: Options include bright annealing, black phosphating, and galvanizing for enhanced durability.
High Precision Manufacturing: Features smooth surfaces, invisible welding seams, and low roughness for critical applications.
Diverse Material Options: Available in carbon steel, stainless steel, and alloy steel grades to suit specific needs.
Comprehensive Quality Inspection: Includes 100% eddy current testing, size checks, and chemical analysis with EN 10204 3.1 certificates.
Flexible Delivery Conditions: Offers BK, BWK, BKS, GBK, and NBK conditions to match specific mechanical performance requirements.
1-Year Warranty Coverage: Provides one-year warranty and after-sales service for all mechanical equipment.
Company profile

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 standards do the steel pipes comply with?
A:
The pipes comply with DIN, EN, ASTM, ISO, BS, SAE, and other international standards.
Q:What is the size range for the pipes?
A:
The outer diameter ranges from 3mm to 100mm, and lengths can be customized as per request.
Q:What surface treatments are available?
A:
Available treatments include bright annealing, black phosphating, and galvanizing.
Q:How is quality guaranteed before shipment?
A:
We conduct pre-production samples, final inspections, 100% eddy current testing, and size checks.
Q:What delivery conditions are offered?
A:
Options include BK (cold finished/hard), BWK (cold finished/soft), BKS (stress relieve), GBK (annealed), and NBK (normalized).
Send Inquiry
*To:
Zhangjiagang Chewit International Co., Ltd.
Zhangjiagang Chewit International Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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