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Industrial Facility

We Make the World Better

Lanzhou Sihaitong Industrial Resources Trading Co., Ltd. – Your trusted partner in industrial materials, trading, and supply chain solutions based in Gansu, China.

About Lanzhou Sihaitong

Lanzhou Sihaitong Industrial Resources Trading Co., Ltd. is a professional supplier and trader of industrial materials and resources, headquartered in Lanzhou, Gansu Province, China. With years of experience in international trade and logistics, we are committed to delivering high-quality products and reliable services to clients worldwide.

Our mission is to bridge global markets with premium Chinese industrial goods, ensuring efficiency, transparency, and long-term partnerships. We specialize in sourcing, quality control, and export logistics for a wide range of industrial commodities.

Global Supply Chain Expertise
Strict Quality Assurance Protocols
Customer-Centric Service Model
LST

Our Products

We offer a diverse portfolio of industrial materials and resources tailored to meet the needs of various sectors including construction, manufacturing, and energy.

Industrial Steel

Carbon Steel Billets

High-strength billets for forging and rolling applications.

  • Grade: Q235, Q345
  • Diameter: 150–300mm
  • Length: 6m, 9m, 12m
  • Standard: GB/T 700
Metal Sheets

Galvanized Steel Sheets

Corrosion-resistant sheets ideal for roofing and cladding.

  • Thickness: 0.5–2.0mm
  • Zinc Coating: Z100–Z275
  • Width: 914–1250mm
  • Standard: ASTM A653
Pipes

Seamless Steel Pipes

Used in high-pressure systems and mechanical structures.

  • OD: 21.3–609.6mm
  • Wall Thickness: 2.77–40mm
  • Material: 20#, 45#, 16Mn
  • Standard: GB/T 8162
Alloys

Stainless Steel Coils

Premium-grade coils for chemical and food processing.

  • Grade: 304, 316, 321
  • Thickness: 0.3–3.0mm
  • Width: 1000–1500mm
  • Finish: 2B, BA, No.4
Construction Materials

Rebar (Deformed Bar)

High-tensile reinforcement bar for concrete structures.

  • Diameter: 6–50mm
  • Grade: HRB400, HRB500
  • Length: 9m, 12m
  • Standard: GB/T 1499.2
Industrial Components

Forged Flanges

Precision-engineered flanges for pipeline connections.

  • Size: 1/2"–48"
  • Pressure: PN6–PN160
  • Material: A105, F304, F316
  • Standard: ASME B16.5
Raw Materials

Ferroalloys (Ferrosilicon)

Used in steelmaking as deoxidizers and alloying agents.

  • Si Content: 75%, 90%
  • Packaging: 1MT Jumbo Bags
  • Size: 10–100mm
  • Standard: GB/T 2272
Energy Materials

Coal & Coke

Metallurgical coal and foundry coke for industrial furnaces.

  • Calorific Value: 6000–7200 kcal/kg
  • Sulfur: ≤1.0%
  • Moisture: ≤10%
  • Size: 25–80mm

Why Choose Us?

We combine local expertise with global standards to deliver unmatched value in industrial trading.

Quality Assurance

Every product undergoes strict inspection and testing to meet international standards and client specifications.

Fast Delivery

Efficient logistics network ensures timely shipment via sea, rail, or land to destinations worldwide.

Customer Support

Dedicated team available to assist with inquiries, documentation, and after-sales service.

50+
Global Clients
15+
Years Experience
10K+
Tons Shipped
30+
Countries Served

Frequently Asked Questions

Where is your company located?

Our headquarters is located at 494, Duanjiatan Road, Lanzhou, Gansu, China.

What are your main products?

We specialize in carbon steel, stainless steel, rebar, seamless pipes, ferroalloys, coal, and various industrial components.

Do you offer OEM or custom manufacturing?

Yes, we collaborate with trusted manufacturers to provide customized solutions based on client drawings and specifications.

How can I request a quote?

Please visit our official website or contact us directly via email for product inquiries and quotations.

Get in Touch

Reach out to us for inquiries, quotes, or partnership opportunities.

Phone

+86-931-7667812

E-Fax

+86-20-28819702 ext. 401849

Address

494, Duanjiatan Road, Lanzhou, Gansu, China

Contact Person

Wu Chun'E

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