Black Painting ASTM A106 ASME SA53 Large Diameter Welded Pipe

Kinds of Welding Process of Chinese Welded Steel Pipe
There are 9 kinds of weling process of Chinese welded steel pipe:
1. High frequency resistance welding
Using the skin effect of high frequency current and the proximity effect, the edge of the strip of steel billet is quickly heated to reach the molten state, and the molten metal is squeezed and pressed by the squeezing roller to achieve welding.
2. Submerged arc welding
Arc welding arc welding method in the coverage of the flux. The weld metal pool is solidified into a weld under the protection of the flux coating, and the flux melt layer cools to the slag shell over the outer surface of the weld.
3. Tungsten inert gas welding (TIG)
The use of pure tungsten or activated tungsten (thorium tungsten, cerium tungsten, etc.) as the electrode of the inert gas welding tungsten inert gas shielded welding, the English referred to as TIG welding. It is under inert gas protection, the use of tungsten arc welding electrodes generated between the hot-melt parent metal and filler wire welding method.
4. Melting inert gas welding (GMAW)
The use of welding wire for the inert gas welding electrodes.
5. CO2 gas shielded welding
With a purity of> 99.8% of CO2 as a protective gas welding gas arc welding.
6. Mixed gas welding
By two or more gases, according to a certain percentage of mixed gas as a protective gas gas shielded welding. TIG welding: gas shielded welding using argon as the shielding gas.
7. Pulse TIG
The use of base current to maintain the main arc of the ionization channel, and periodically add a pulse of the same polarity of high peak pulse current pulse to melt the molten metal and control the transition of argon arc welding.
8. Plasma arc welding
With the help of water-cooling nozzle’s restraining action on the arc, a plasma arc with higher energy density can be welded.
9. Hot brazing
In the welding process, a metal material with a lower melting point than that of the base metal is used as a brazing filler metal, the weldment and the brazing filler metal are heated

Hebei Huayang Steel Pipe Company Ltd. is the largest ERW and LSAW steel pipe manufacturer in Northern China. Established in 2005, we have a modern factory covering an area of 666,000 square meters, with over 700 employees and a fixed asset of 200 million USD, annual output capacity is up to 1,000,000 Tons. We can quickly fulfill all of our domestic and international customers’ orders, try our best to meet customers’ requirements.

We are located in Cangzhou city, Hebei province, a large steel production base in Northern China. Huayang is near to the raw material steel mill, such as Hebei Zhongtie Equipment Company, Shandong Iron and Steel Co., Ltd, Shougang Group, Jinxi Group, which reduce the material cost. At the same time, Huayang is 210 kilometers from Beijing, 150 kilometers from Tianjin City, 160 kilometers from Xingang port, with convenient transportation, which is convenient for customer’s visit and reduce the transportation cost. With lower material cost control, we can offer more competitive price and significant profit for our customers.

Huayang use advanced imported production equipment such as German once-through rolling machines, British CT METORI digital controllers, one φ114.3mm-φ168.3mm ERW steel production line, three φ219mm-φ426mm ERW steel pipe production line, one φ426mm-φ660mm ERW steel pipe production line, one JCOE production lines for LSAW pipe, size range from 16” to 56” (406.4mm-1422.4mm), wall thickness: 9.53mm-50mm. In 2018, we build a new advanced RBE production line for LSAW pipe, size range from 16” to 56” (406.4mm-1422.4mm), wall thickness: 9.53mm-30mm.

Twenty φ245mm-φ820mm thermal expansion pipe production lines, we have our own high-tech physics and chemistry labs where we can conduct our own tests such as physical properties and chemical composition test, and as well, UT, hydraulic test, X-ray and other test equipment is available, which can meet all related standards and inspection requirements.

In order to provide One-Stop service for customers with superior products from qualified supplier, Huayang set up branch company, Cangzhou Wingo International Trading Co., Ltd in 2013, to help customers purchase different products, such as seamless steel pipes, SSAW steel pipes, Galvanized pipes, Anti-corrosion pipes, pipe fittings and flanges etc.

Huayang steel pipes are used as the construction material and the pipelines for oil, gas, water, steam, and other middle & low hydraulic pressure fluids. Huayang’s products are sold nationwide and mainly exported to Southeast Asia, Middle East, South America, Africa, North America and Europe. Our company has consistently aimed to provide our customers with high quality, affordable industrial pipes. “Huayang” brand steel pipe has gained praises and high reputation from all of the world.