Scaffolding Steel Pipe, GI Pipe, Greenhouse Tube - Minjie

About Tianjin Minjie Steel Co., Ltd.

Established in 1998, Tianjin Minjie Steel Co., Ltd. is a reliable manufacturer and exporter of top-quality steel products. Our factory covers more than 70,000 square meters and is ideally located just 40 kilometers away from XinGang port, the largest port in northern China.

We specialize in the production of pre-galvanized steel pipes, hot dip galvanized pipes, welded steel pipes, and scaffolding products. With extensive expertise in the steel industry, we offer exceptional sales and consultation services to clients worldwide.

Over 25 years of industry experience
70,000+ sqm manufacturing facility
Strategic location near XinGang Port
Rich experience in foreign trade export

1998

Founded

Why Choose Minjie Steel?

We combine advanced manufacturing, strict quality control, and customer-focused service to deliver reliable steel solutions globally.

Certified Quality

CE, ISO9001, and ISO13485 certified manufacturing processes ensure consistent product quality and compliance.

Large-Scale Production

Over 70,000 square meters of manufacturing space enables high-volume production with fast turnaround times.

Strategic Location

Located just 40km from XinGang Port, ensuring efficient logistics and competitive shipping costs.

Intimate Support

Dedicated after-sales service and export experience ensure smooth transactions and long-term partnerships.

Our Premium Steel Products

High-quality steel pipes, tubes, and structural components for construction, industrial, and agricultural applications.

Hot Dip Galvanized Square Tube

Q345B structural steel with durable zinc coating. Ideal for construction frameworks and industrial applications.

• ASTM A500 Gr. B compliant
• Sizes: 40x40mm to 200x200mm
• Wall thickness: 1.8mm to 8mm
• Z275 coating standard

Adjustable Steel Shoring Props

Heavy-duty Q235 steel props for scaffolding and formwork systems. Galvanized for corrosion resistance.

• Load capacity: 20-30 kN
• Adjustable height: 1.8m to 3.6m
• Galvanized or black finish
• Complies with EN 1065 standards

Pre-Galvanized Square Tube

Cold-formed square tube with factory-applied zinc coating. Perfect for greenhouse frames and light structures.

• JIS G3466 structural standard
• Sizes: 20x20mm to 100x100mm
• Thickness: 1.0mm to 3.0mm
• Available in colored coatings

Schedule 80 Galvanized Pipe

Heavy-wall galvanized round pipe for high-pressure applications and structural use. Superior corrosion protection.

• ASTM A53 / API 5L compliant
• DN15 to DN300 available
• Hot-dip galvanized finish
• Q235B carbon steel grade

H Beam & Angle Steel

Hot-rolled structural sections for building frameworks, towers, and industrial support systems.

• Q235, SS400, Q345 grades
• Standard metric sizes
• Galvanized or black finish
• Custom lengths available

Hot-Dip Galvanized Steel Wire

High-tensile steel wire with zinc coating for fencing, cable, and reinforcement applications.

• BS1442 compliant
• Diameter: 1.0mm to 5.0mm
• French wire standard available
• Z275 coating weight

Black Rectangular Steel Tube

Welded rectangular tube in Q195/Q235 steel. Cost-effective solution for non-corrosive environments.

• Sizes: 20x40mm to 100x200mm
• Wall thickness: 1.5mm to 5.0mm
• Standard length: 6m
• Mill test certificate provided

Rolled Grooved Galvanized Pipe

Patent product with shoulder ends for quick-connect piping systems. Ideal for fire protection and HVAC.

• Schedule 40 & 80 available
• Grooved end connections
• Hot-dip galvanized
• Q235 carbon steel base

Scaffolding System Components

Complete scaffolding solutions including tubes, couplers, boards, and adjustable props.

• 48.3mm diameter tubes
• Pre-galvanized finish
• Compatible with standard systems
• Full project supply capability

View All Products

Frequently Asked Questions

Pre-galvanized steel is coated with zinc before forming, typically through an electro-galvanizing process. Hot-dip galvanized steel is formed first, then dipped into molten zinc. Hot-dip provides a thicker, more durable coating with superior corrosion resistance, while pre-galvanized offers a smoother finish and is often more cost-effective for indoor applications.

Tianjin Minjie Steel Co., Ltd. holds CE, ISO9001, and ISO13485 certifications. These demonstrate our commitment to quality management systems, product consistency, and compliance with international standards for steel manufacturing and export.

Standard orders are typically processed and shipped within 15-25 days after confirmation. For large container orders or custom specifications, lead time may extend to 30-45 days. Our proximity to XinGang Port enables efficient loading and shipping coordination.

Yes, we offer custom cutting to specified lengths and customized packaging solutions including bundle tying, corner protectors, and container loading optimization. We work with clients to meet specific project requirements and shipping conditions.

We typically accept T/T (Telegraphic Transfer) with 30% deposit and 70% balance before shipment. For established partners, we may consider L/C (Letter of Credit) terms. All transactions are supported with full documentation including commercial invoice, packing list, and bill of lading.

Contact Minjie Steel

Ready to discuss your steel requirements? Contact our export team for product inquiries, quotations, and technical support.

Factory Address

NO.18, 5 ROW, HUAXIA TECHNOLOGY AREA, GUANGHAI ROAD, JINGHAI COUNTY, TIANJIN, CHINA

Phone

+86-18020026655

086-22-68962601

Email

info@minjiesteel.com

Get in Touch

For product inquiries and quotations, please visit our official website to submit your requirements.

Visit Official Website to Contact

We respond to all inquiries within 24 hours

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