How to distinguish 304 and 201 stainless steel?

304 has better quality, higher nickel content (18Cr-9Ni), and better corrosion resistance compared to 201 (17Cr-4.5Ni-6Mn). 304 is imported and used for food/chemical equipment, while 201 is domestic, has high manganese, and is prone to rusting.

Small Diameter 316 304 Sanitary Seamless Stainless Steel Precision Pipe

Name: Small Diameter 316 304 Sanitary Seamless Stainless Steel Precision Pipe
Brand: Wenzhou Sinco Steel Co., Ltd.
SKU: 882216465

Zhejiang, ChinaWenzhou Sinco Steel Co., Ltd.

US$2.85

50 kg

Product profile

Customization

Available

Type

Seamless,Welded

Technique

Cold Rolled,Cold Drawn Hot Rolled,ERW,Efw

Model NO.

PIPE

Material

Stainless Steel

Surface Treatment

Polished

Usage

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose

Section Shape

Round

Certs

ISO 9001:2015, Ce

Length

Color

Silver

Wall Thickness

1mm-5mm

Model No.

304/316L

Customize

Available

Transport Package

Nylon Bags or Wooden Case

Specification

1/2"-8"(DN15-DN200)/21.3mm-273mm

Trademark

SINCO

Origin

Wenzhou, China

HS Code

7304419000

Production Capacity

2000ton/Month

Key features

Wide Material Selection: Available in 304, 316L, 310, 410, and other stainless steel grades.

Customizable Dimensions: Outer diameter from 4mm to 3000mm and length as per customer request.

Multiple Surface Finishes: Options include satin, mirror finish, pickling, annealing, and polishing.

Comprehensive Certifications: ISO 9001:2015, CE, ABS, CCS, LR, PED, and ASTM/GB/JIS standards.

OEM Service Available: Full customization from samples, designs, and flexible minor customization.

Extensive Testing Capabilities: UT, ET, HT, RT testing available according to standards or customer requests.

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

Fast Delivery Time: Typical delivery within 15-50 days depending on quantity and location.

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: ≤8.41h 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.