Black Surface Treatment Square Steel Tube 30*30-500*500 Size Range for Construction & Decoration

Price Negotiable
Price: US $666-1,000 / Ton
MOQ: 20 Tons
Delivery Time: Negotiable
Product Description
Mild Steel Rectangular Square Hollow Section Steel Tubes
High-quality mild steel rectangular and square hollow section tubes designed for construction applications, offering superior strength and durability.
Available Products
Product Type Specifications
Round Pipe OD 10mm - 1000mm | Thickness 4mm - 30mm | Any Length
Square Pipe 10mm×10mm - 1000mm×1000mm | Thickness 1.2mm - 30.0mm
Rectangle Pipe 20mm×40mm - 400mm×700mm | Thickness 1.2mm - 30.0mm
L/T/Z Window Section 28mm/38mm | Thickness 0.5mm - 1.5mm
Product Specifications
Materials: A106B, SS400, S235JR, S275JR, S355JR, 1020, 1045, 4140, etc.
Surface Treatment: Black, galvanized, or painted
Packing: Export standard packing (bundles, seaworthy package, shipped in container)
Delivery Port: Shanghai, China
Lead Time: Within 30 days after receiving original L/C or deposit
MOQ: 10 Tons per size
Production Capacity: 10,000MT per month
Main Markets: Europe, America, Africa, Southeast Asia
Applications
  • Structural applications
  • Motorbike and automobile manufacturing
  • Ornamental uses
  • Medical equipment
  • Sports equipment
  • Home furniture
Standard Size Specifications
Size (Outer Dimensions) Wall Thickness Length
20×20 / 25×251.2mm - 2.75mm6M in stock (or customized)
30×30 / 20×40 / 30×40 / 25×401.2mm - 3.5mm6M in stock (or customized)
40×40 / 50×50 / 30×50 / 25×50 / 30×60 / 40×601.2mm - 4.75mm6M in stock (or customized)
60×60 / 50×70 / 40×80 / 40×501.2mm - 5.75mm6M in stock (or customized)
70×70 / 60×80 / 50×80 / 100×40 / 50×901.5mm - 5.75mm6M in stock (or customized)
75×75 / 80×80 / 90×90 / 60×100 / 50×100 / 120×60 / 100×80 / 60×901.5mm - 7.75mm6M in stock (or customized)
100×100 / 120×801.8mm - 7.75mm6M in stock (or customized)
120×120 / 130×130 / 180×80 / 160×80 / 100×150 / 140×80 / 140×602.5mm - 10.0mm6M in stock (or customized)
140×140 / 150×150 / 100×180 / 200×1002.5mm - 10.0mm6M in stock (or customized)
160×160 / 180×180 / 200×1503.5mm - 11.0mm6M in stock (or customized)
200×200 / 250×150 / 100×2503.5mm - 11.0mm6M in stock (or customized)
250×250 / 250×200 / 300×150 / 300×2004.5mm - 15.0mm6M in stock (or customized)
300×300 / 350×200 / 350×250 / 300×1504.5mm - 15.0mm6M in stock (or customized)
350×350 / 350×300 / 450×250 / 400×300 / 500×2004.5mm - 15.75mm6M in stock (or customized)
400×400 / 280×280 / 450×300 / 450×200 / 400×350 / 400×250 / 500×250 / 500×3004.5mm - 15.75mm6M in stock (or customized)
Product Gallery
Mild steel square hollow section tubes - construction grade Rectangular steel tubes for structural applications Industrial square steel pipe inventory Steel tube manufacturing and quality control Custom steel tube specifications and sizes Steel hollow sections for construction projects
Company Overview
We are a comprehensive steel pipe enterprise integrating production, processing, and sales. Our main business includes steel tubes, square tubes, seamless square tubes, thick wall square tubes, cold drawn square tubes, and various specialized steel pipe products.
Product Range
We offer a complete range of square tube and rectangular tube specifications from 20×20mm to 800×800mm, with thickness ranging from 0.6mm to 28mm, totaling over 2,800 different specifications.
Manufacturing Partnerships
We maintain excellent cooperative relationships with major steel pipe factories including Tianjin Seamless Steel Pipe Factory, Baotou Steel Pipe Factory, Chengdu Steel Pipe Factory, Wuxi Steel Pipe Factory, and Baosteel Steel Pipe Factory.
Applications
  • Steel structures and large venues
  • Exhibition centers and lifting machinery
  • Shipbuilding and storage shelves
  • Decoration and transportation facilities
  • Airport construction and railway vehicles
  • Bridge support and mine support
  • Three-dimensional garages and outdoor advertising
  • Fitness equipment and wind power equipment
  • Vehicle manufacturing and other industries
Company Advantages
Competitive Pricing
We implement low-cost market competition strategies through strong sales foundations, financial strength, and diversified operational modes. Our advanced management system ensures operating costs remain lower than industry peers.
Quality Assurance
Professional quality control from procurement to sales, with comprehensive quality audits at every step. We continuously track steel mill quality to ensure reliability and promptly address any quality concerns.
Sincere Service
24-hour distribution service with multiple transportation options including automobile, railway, and ship. We offer complete steel products with numerous varieties and simplified ordering processes through telephone, telex, and internet platforms.
Steel manufacturing company facilities and operations

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person Gao Ben

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