Premium Steel Pipes & Tubes Supplier

High-quality ERW, Seamless, Spiral, Galvanized Steel Pipes, Square & Rectangular Tubes, Steel Sections, and Plates for industrial, construction, and infrastructure applications worldwide.

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Industrial Grade

ASTM, API 5L, and JIS standards compliance for durability and performance.

Global Export

Serving clients in over 50 countries with reliable logistics and delivery.

Certified Quality

Mill Test Certificates, ISO, and third-party inspection available.

About RMR Steel

Tianjin Reliance Steel Co., Ltd., operating as RMR Steel, was founded in 2004 and is located in Jinghai District, Tianjin, China. With over 60,000 square meters of manufacturing and storage space, we are committed to delivering high-quality steel products to global markets.

Our team of technical and sales experts provides personalized support to help you select the right steel solutions for your application. We offer samples for evaluation and ensure competitive pricing, fast delivery, and exceptional customer service.

Founded in 2004
60,000 sqm facility in Tianjin
ISO & MTC Certified
Global logistics network

Our Product Range

Comprehensive selection of steel pipes, tubes, sections, and plates manufactured to international standards.

ERW Welded Steel Pipe

ASTM A53, A500, used in machinery, construction, and fluid transport.

Diameter: 1/2" to 24"
Thickness: SCH 10 to XXS
Material: Q235, Q345, STK400

Seamless Steel Pipe

ASTM A106, API 5L, ST35-ST52 for high-pressure applications.

Diameter: 1/2" to 48"
Grade: Gr.B, X42, X52, X60
Applications: Oil, gas, boiler

Spiral Steel Pipe

LSAW/SSAW, large diameter pipes for pipelines and penstocks.

Diameter: 219mm to 3200mm
Thickness: 6mm to 30mm
Standard: SY/T5037, API 5L

Galvanized Steel Pipe

Hot-dip galvanized for corrosion resistance in outdoor use.

ASTM A53, A123 coated
Zinc coating: 200-600g/m²
Used in scaffolding, fencing

Square & Rectangular Tube

ASTM A500, hollow sections for structural and mechanical use.

Sizes: 20x20 to 300x200mm
Thickness: 1.0mm to 12mm
Surface: PE coated, painted

Steel Plate

Hot-rolled, wear-resistant, and galvanized plates for construction.

Grade: A36, Q235, Q345, Nm500
Thickness: 3mm to 200mm
Size: Up to 3000x12000mm

H-Beam & Steel Section

Structural profiles for building and infrastructure projects.

Types: H, I, C, Angle, Channel
Standards: JIS, ASTM, GB
Material: SS400, Q235, Q355

Scaffolding Products

Steel props, planks, and jack bases for safe construction.

Adjustable height: 1.8m to 3.6m
Load capacity: 1-5 tons
Galvanized for durability

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Why Choose RMR Steel?

Trusted by global partners for quality, reliability, and service excellence.

Quality Assurance

ISO-certified processes and Mill Test Certificates for every batch.

Fast Delivery

Efficient logistics via container, bulk vessel, or train worldwide.

Competitive Pricing

Direct factory pricing with volume discounts and low MOQs.

24/7 Support

Dedicated team available via WhatsApp, WeChat, and email.

150+

Global Clients

20+

Years Experience

60K

m² Facility

50+

Countries Served

Frequently Asked Questions

What standards do your steel pipes comply with?

Our products meet ASTM, API 5L, JIS, GB, and other international standards. Mill Test Certificates are available for all orders.

Can you provide custom sizes and specifications?

Yes, we offer customization for diameter, thickness, length, coating, and packaging based on your project requirements.

What is your minimum order quantity (MOQ)?

Our MOQ is flexible and depends on the product type. We accommodate both small trial orders and large-volume contracts.

How do you ensure product quality?

We conduct strict in-house inspections and third-party testing. All products undergo hydrostatic, ultrasonic, and dimensional checks.

What are your delivery terms and lead times?

We offer FOB, CIF, and other Incoterms. Lead time is typically 15-30 days after order confirmation, depending on quantity and destination.

Get in Touch

Reach out for quotes, samples, or technical support.

Phone

+86-022-68597220

+86 13012201066

Email

adminylt@reliancesteel.cn

+86 13012201066

WeChat

Available on request

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