Basic Info
Type
Seamless/ Welded
Technique
Hot Rolled
Material
Carbon Steel
Surface Treatment
Black
Section Shape
Square
Origin
China
Usage
Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration
Product Description
We are a premium supplier and processor of specialty seamless steel pipe, hollow section, high temperature/low temperature steel pipe & fittings - in multiple product forms, including steel plate, bar, tubular and structural forms. With state-of-the-art manufacturing processes, contemporary technologies, and proficient services, we offer finest quality products at the most advantageous rates.
Hollow Section Members
Hollow section members can be circular, square, or rectangular sections, including elliptical shapes. Composed of structural steel, these sections are available with anti-rust oil coating from inside & outside to ensure safe delivery and longevity.
Square Tube Standards
- ASTM A500 Grade B
- ASTM A513 (1020-1026)
- ASTM A36 (A36)
- EN 10210: S235, S355, S235JRH
- EN 10219: S235, S275J0H, S355J2H
Technical & Chemical Specifications
| Grade |
Element |
C (%) |
Mn (%) |
P (%) |
S (%) |
| ASTM A500 Gr.b |
% |
0.05%-0.23% |
0.3%-0.6% |
0.04% |
0.04% |
| Grade |
Yield Strength |
Tensile Strength |
Elongation |
| A500.Gr.b |
46 ksi |
58 ksi |
23% |
| A513.GR.B |
72 ksi |
87 ksi |
10% |
Equivalent Specifications
| EN 10210-1 |
NF A 49501 / NF A 35501 |
DIN 17100 / DIN 17123/4/5 |
BS 4360 |
UNI 7806 |
| S235JRH |
E 24-2 |
St 37.2 |
- |
Fe 360 B |
| S275JOH |
E 28-3 |
St 44.3 U |
43 C |
Fe 430 C |
| S355J2H |
E 36-4 |
St 52.3 N |
50 D |
Fe 510 D |
Quality Assurance & Testing
Our facilities follow strict quality standards for all manufacturing processes. A specialized quality control team supervises the entire process to maintain consistent product quality.
Hollow Section Tests:
- Chemical Component Analysis
- Mechanical Properties (Yield, Tensile, Elongation)
- Technical Properties (Impact, Blow, Flattening)
- X-ray Test & Exterior Size Inspection
- Hydrostatic Test
Frequently Asked Questions
Q1. What are your main products?
Our main products are carbon steel seamless pipes, welded pipes, hollow sections, and pipe fittings (flanges, elbows, tees, reducers, nipples, etc.), as well as sheets, coils, strips, and bars.
Q2. What are the advantages of your manufacturing facility?
We focus on offering finest quality products—best in class—at the most advantageous rates, combined with expert technical services.
Q3. How do you control product quality?
A dedicated quality control team supervises all assurance aspects throughout the manufacturing process. Regular quality control tests are conducted to maintain consistent and uniform output.
Q4. Can you provide product samples?
Yes. Small samples currently in stock can be provided for free. For customized samples, the process typically takes about 2-3 days.
Q5. What are the accepted payment terms?
We accept payments via T/T (30% deposit in advance, 70% balance before shipment), L/C (30~120 days), Western Union, Paypal, or through trade online platforms.
Q6. Do you support OEM/Customization?
Yes, we support customization. Sizes and specifications can be tailored according to specific customer requirements and structural needs.