Rust Proof Structural Steel Square Tubing , Welded Galvanized Black Steel Pipe

Product Specification

Hot Rolled Black Welded Square Structural Hollow Section Shape Steel Pipe

Hot Rolled Steel Pipe Introduce

1. Hot rolling can destroy the cast structure of the steel ingot, refine the grains of the steel, and eliminate the defects of the microstructure, thereby making the steel structure dense and improving the mechanical properties.
2. This improvement is mainly reflected in the rolling direction, so that the steel is no longer an isotropic body to a certain extent; bubbles, cracks and looseness formed during pouring, they will be welded under the action of high temperature and pressure.
3. The hot-rolled steel is more rigid than the cold-rolled steel, so the torsion resistance of the hot-rolled steel is better than that of the cold-rolled steel.
4. Uses: under construction pipeline transportation, boiler hot water transportation, gas transportation, water power fluid pipeline, etc.

Tests we apply to the tubes:

1. Chemical composition analysis

2. Mechanical properties (tensile strength, yield strength, elongation, hardness)

3. Technological test (flattening test, flaring test, bending test, hydraulic pressure test)

4. Surface quality detection

5. Eddy-current examination

6. Visual test

Applications:

1. Low and middle pressure fluid transportation pipeline

2. Casing pipe

3. Low and medium pressure boiler seamless steel pipe

4. High pressure boiler seamless steel pipe

5. Carbon seamless steel pipe for ship

6. Seamless steel pipe used in high pressure chemical fertilizer equipment

7. Petroleum and natural gas industry

8. Steel pipe for heat exchanger

9. Used for diesel engine

10. Chemical industry, building industry, environment industry and more

Specifications

Pictures show

Company Advantage

1. Our company maintains dose relations with numerous large steel strip suppliers and Steel.
2. We are a direct-selling manufacturer specializing in the research and development of Galvanized Steel Pipe, Welded Steel Pipe, Bright Steel Tube inside and outside.
3. We are dedicated to meeting our customers steel requirements.
4. We have an experienced,professional and hardworking team to help you find the best purchase solution.
5. Cost effective: Competitive prices with factory directly supply
6. All for users throughout the whole process of economic management, for this purpose, to provide customers with high-quality products and excellent services.
7. Warmly welcome and looking forward to cooperate with your honored !

FAQ

Q. How about the delivery time?
A: Within 15-30days after receiving the deposit or L/C at sight. Of course, the detail will be confirmed by the quantity and the different products.

Q. Are you trading company or manufacturer ?
A. Yes. We are a factory for steel pipe but we also do some another steel products galvanized coil cold rolled coil galvanized strip steel sheet, and etc.. if you havedetailed spec or drawing. Our production lead time is within 30-45 days.

Q. How can I get your quotation as soon as possible ?
A: The email and fax will be checked in 24 hours. Please tell us the order information about quantity.Specification (steel type, material,size ),and destination port,you will get the latest price.

Q: Can you supply sample?
A: Yes,we can supply you free small samples,but air cost will be paid by customers.

Q: Why choose us ?
A: We are professional manufacturer ,and we can provide the best product ,competitive price and excellent service.

Q. Can sizes of different lengths be produced?
A. Yes.