- Overview
- Product Description
- Chemical Composition
- Detailed Photos
- Application
- Packaging & Shipping
- FAQ
Basic Info.
Product Description
Carbon Steel Tube Square Rectangular ERW Pipe Astms235jr S235j0 S235j2 Black Building Material Mill Black Steel Square Pipe/Hollow Section
Carbon steel pipe is exactly what it sounds like - pipe made from carbon steel, a steel alloy containing iron and carbon. An incredibly durable material, carbon steel pipe is used in heavy-duty industries like infrastructure, shipping and chemical fertilizing.Carbon steel pipe is made of iron, carbon, and other elements. Black steel pipe is made of iron and other elements, but the main difference between the two is that carbon steel pipe has less carbon. This makes it harder and more brittle, but also allows it to be welded, machined, and formed more easily.
| Item | Steel square rectangular tube |
| Standard | API 5L/ASTM A523/ASTM A252/GB-T8711/BS 6363 etc |
| Material | S235JR,S235JO,S235J2,SS330,SPHC, S185,CS Type B |
| Fabrication | Plain ends, cutting, threading, etc. |
| Surface Treatment | 1. Silver and color painting |
| 2. Transparent oil,anti-rust oil | |
| 3. Galvanize on the surface | |
| Package | Bundle;Bulk;Plastic bags ,etc |
| Others | We can do special orders as customer's requirement. |
| All the production process are made under the ISO9001:2008 strictly |
| Chemical Compose | Grade | C % | Si % | Mn % | P % | S % |
| Q195 | ≤0.12 | ≤0.30 | ≤0.50 | ≤0.035 | ≤0.035 | |
| Q235 | ≤0.22 | ≤0.35 | ≤1.4 | ≤0.035 | ≤0.035 | |
| DX51D | ≤0.12 | ≤0.50 | ≤0.60 | ≤0.1 | ≤0.045 | |
| SGCC | ≤0.15 | - | ≤0.80 | ≤0.05 | ≤0.03 | |
| Mechanical Property | Grade | Yield Strength MPA | Tensile Strength MPA | Elongation | ||
| Q195 | ≥195 | 315-430 | 22% | |||
| Q235 | ≥235 | 370-500 | 19% | |||
| DX51D | - | 270-500 | 22% | |||
| SGCC | ≥205 | ≥270 | 22% | |||
Based on various standard / different standard,
1. delivery liquid, water, gas2. for construction, steel structure,
3. scaffolding pipe, scaffolding material,
4. greenhouse frame, fence post,
5. machinery parts, (bus frame material for some countries, truck frame material ects.)
6. Low and middle pressure fluid pipeline, boiler, petroleum and natural gas industry, drilling, chemical industry, electric
industry, shipbuilding, fertilizer equipment and pipeline, structure, petrochemical, pharmaceutical industry
The surface requirements are not high can be ordinary bundled packaging after rainproof packaging The surface requirements are high, and have done positive or sprayed electrostatic film heat shrinkable packaging, wrapping paper packaging If the output requirement is particularly high, we will pack it in wooden cases or wooden brackets after the above packaging.
Q1: Are you a manufacturer or a trading company?
Q2:Can I visit your factory ?
A: Of course.We warmly welcome you to visit our factory.
Q3: Do you have quality control? How can you give warranty of your products?
A: Yes, we have gained certification of GB/T19001:2016/ ISO9001:2015. We are the verified supplier by SGS on the platform of Alibaba and MIC. We extend a 100% satisfaction guarantee on all items. Please feel free to feedback immediately if you are not pleased with our quality or service.