Hebei Huayang Steel Pipe Co., Ltd. |
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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
Item | Details |
Type | Seamless,ERW,LSAW,SSAW |
Standard | ASTM A106.ASME SA106,API 5L ,ASTM A53 ,ASME SA53 |
Grade | B,X42,X46,X52,X56,X60,X65 |
OD | 17.1-1422mm (3/8inch-56inch) |
WT | 6.35-25mm |
Length | 1-12.9m random length,or Fixed length( 5.8m,5.85m,6m.11.8m.12m) |
Min.Order quantity | We can accept 1 pcs/size if we have stock. |
Surface | 3PE,3PP,FBE,Black painting,Clear oil varnish.or self color,Inorganic zinc rich layer |
Ends | Plain ends,Bevels. |
Payment term | TT or LC |
Package | Bundles or loose |
Delivery time | Depends on the specific orders,normally 45days |
Factory | China |