What are the available steel grades?

Available grades include St35, St45, St52, E215, 235, 255, 355, 1010, 1015, 1025, 1030, 1045, 4130, 4140, and various stainless steel grades like 304, 316.

What are the size ranges for the pipes?

Size ranges vary by standard, typically OD 2-60mm with WT 0.3-10mm, or OD 3-30mm with ID 1-12.5mm.

What is the lead time for production?

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

SAE J524 Anti Corrosion Treatment Silver Yellow Galvanized Seamless Carbon Steel Pipe

Name: SAE J524 Anti Corrosion Treatment Silver Yellow Galvanized Seamless Carbon Steel Pipe
Brand: Zhangjiagang Chewit International Co., Ltd.
SKU: 2139549165

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 Steel

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 En 10305

Delivery Condition

Bk, Gbk, Bkw, Bks or Nbk

Steel Grade

St35 St45 St52 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

Precision Cold Drawn Process: Ensures precise dimensions and low surface roughness for inner and outer surfaces.

Anti-Corrosion Treatment: Features silver yellow galvanizing, bright annealing, and black phosphating options.

Wide Material Selection: Available in Carbon Steel, Alloy Steel, and Stainless Steel grades.

Comprehensive Standards Compliance: Meets DIN, ASTM, JIS, GB, EN, and ISO standards for global application.

Rigorous Quality Inspection: Includes 100% eddy current testing, tensile strength, and flattening checks.

Versatile Application Scope: Suitable for automotive, hydraulic systems, aerospace, and heat exchangers.

Flexible Delivery Conditions: Offers BK, BKS, GBK, NBK, and other specific delivery states.

OEM Service Available: Custom manufacturing services provided for specific customer requirements.

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:Who are we?

We are based in Jiangsu, China, started in 2010, with 11-50 office staff. We sell to Eastern Asia, Mid East, Eastern Europe, Southeast Asia, Northern Europe, Domestic Market, South America, Western Europe, and others.

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 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 condition, ensuring lower roughness and good mechanical performance. We also have a professional inspection team.

Q:What services can you provide?

We accept delivery terms like FOB, CFR, CIF, EXW, DDP, DDU. Payment currencies include USD, EUR, HKD, CNY. Payment types include T/T, L/C, MoneyGram. We speak English, Chinese, Spanish, and Japanese.