How to distinguish 304 and 201 stainless steel?

1). Specification: the Bai composition is different. 304 has better quality and the price is expensive, but 201 is worse. 304 is imported stainless steel plate and 201 is domestic stainless steel plate. 2). 201 is composed of 17cr-4.5ni-6mn-n which is used for railway vehicles.While 304 is composed of 18cr-9ni, which is used for food production equipment, Xitong chemical equipment, nuclear energy, etc. 3). 201 has high manganese content, bright surface with dark brightness, high manganese conten

Durable Alloy Steel Pipe for Oil & Gas with ASTM/En Standards

Name: Durable Alloy Steel Pipe for Oil & Gas with ASTM/En Standards
Brand: Wenzhou Sinco Steel Co., Ltd.
SKU: 2252872085

Zhejiang, ChinaWenzhou Sinco Steel Co., Ltd.

US$2.35

50 kg

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Type

Seamless,Welded

Technique

Cold Rolled,Hot Rolled,ERW,Efw

Material

Alloy Steel

Surface Treatment

Pickling, Annealed,Polished

Usage

Pipeline Transport, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration

Section Shape

Round

Quality

Good

Company

Manufacturer in Wenzhou

Customize

Available

Size

6mm~1200mm

Steel Grade

300 Series

Material Grade

304 316 316L 310S 321 317 317L 317ln;

Transport Package

Nuded Cargo or Nylon Bags or Wooden Box

Specification

6MM~1200MM

Trademark

SINCO

Origin

China

HS Code

7304419000

Production Capacity

2000 Tons Per Month

Key features

Wide Material Range: Includes 304, 316, 316L, 310S, 321, 317, 317L, 317ln, C276, Inconel 600/625/690/718.

Customizable Size: Outer diameter 6mm-480mm, thickness 0.5mm-26mm, length 5.8-6.1m or as requested.

Strict Quality Testing: UT, ET, HT, RT tests and others according to standard or customer requests.

Multiple Certifications: TUV, ABS, CCS, LR, BV certificates available for global compliance.

OEM Service Available: Supports customization from samples, designs, and full customization options.

Low MOQ: Minimum order quantity is only 5 pieces, suitable for small batches.

Fast Delivery: Delivery time is 15-50 days depending on quantity, with large stock available.

Global Export Experience: Exported to over 30 countries including Egypt, Turkey, India, Iran, and Thailand.

Company profile

In-stock CapacityManagement CertificationYears of Export ExperienceFast Delivery

Wenzhou Sinco Steel Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 13 Years CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤7.40h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier serving nuclear, food processing, coal gasification, environmental protection, and aerospace industries. It offers broad customization, including sample-, design-, full-, minor-, and flexible customization, supported by CAD and documented design inputs, outputs, reviews, verification, and validation. However, it does not provide 3D software design, ODM, SDK, private mold, or well-known-brand OEM services, and reported no new products in the past year. Export experience is established, with 13 years of exporting and 71%–90% of sales from exports, but no overseas showroom, agent, branch, or offline trade-show participation. ERP, OA, CRM, SAP, digitalization, and big-data initiatives are reported. Complaint handling and corrective/preventive action lack written procedures or records, while certification, financial credibility, production capacity, and customer cases are insufficiently evidenced.

Supplier typeThe supplier explicitly identifies as a professional technical supplier and describes service orientation toward nuclear, food processing, coal gasification, environmental protection, and aerospace industries. This supports classification as an industry-focused technical supplier rather than a general trading entity.

After-Sales capabilityThe supplier has no overseas showroom, agent, branch, or offline trade-show history, and reports no written procedures or records for complaint handling or corrective and preventive actions. These explicit limitations indicate weakly documented after-sales and service-support capability.

R&D capabilityThe supplier has R&D-related design documentation and CAD capability, but reports no new products in the past year, no ODM, no SDK, no patents, and no private mold designs. The evidence shows basic design capability but also explicit limitations in recent product innovation and proprietary development.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization, supported by CAD and documented design review, verification, and validation materials. This is direct evidence of broad customization capability, although the supplier does not offer 3D software design services or private molds.