La description
Welded steel tubes boast simple production techniques, high
production efficiency, complete specifications and few types of
equipment, but their strength is lower than the seamless steel
tubes. Since the ***0s, with the rapid development of excellent
belt steel rolling production as well as the advancement of welding
and inspection technology, the quality of welded tubes have
constantly been improved, and there are more and more
specifications. They have replaced the seamless steel tubes in more
and more fields. The welded steel tubes include straight slot tubes
and spiral tubes in accordance with seaming types. The welded steel
tubes are made of steel sheets or strip steel, and they include
soldering tubes, electrical welded tubes and automatic arc welded
tubes in accordance with the welding techniques. They also include
straight slot tubes and spiral tubes in accordance with seaming
types. There are round welded tubes and special-shaped (square or
flat) welded tubes in accordance with the shapes of the ends. The
welded tubes include the following types in accordance with theirs
materials and uses: GB/T********3 (zinc-coating welding steel tubes
for conveying low pressure liquids): mainly used for conveying
water, gas, air, oil, heating water, steam or other low pressure
liquids. Its representative material is Grade Q**5A steel.
GB/T********3 (zinc-coating welding steel tubes for conveying low
pressure liquids): mainly used for conveying water, gas, air, oil,
heating water, steam or other low pressure liquids. Its
representative material is Grade Q**5A steel. GB/T*********2
(welded steel tube for mine liquid service): mainly used as the
straight slot welded steel tubes in the mine compressed air,
drainage or gas drainage). Its representative material is Grade
Q**5A and B steel. GB/T*********4 (large diameter electric welded
tubes for conveying low pressure liquid): mainly used for conveying
water, waste water, air, heating steam or other low pressure
liquids or uses. Its representative material is Grade Q**5A steel.
GB/T*********1 (stainless welded steel tubes for mechanical
structure use): mainly used in the machinery, automobile, bicycle,
furniture, hotel decorations or other mechanical parts or
structures. Its representative materials are 0Cr*3, 1Cr*7,
*0Cr*9Ni*1, 1Cr*8Ni9 and 0Cr*8Ni*1Nb. GB/T*********1 (stainless
welded steel tubes for mechanical structure use): mainly used for
low pressure corrosive medium. Its representative materials are
0Cr*3, 0Cr*9Ni9, *0Cr*9Ni*1, *0Cr*7, 0Cr*8Ni*1Nb and
***7Cr*7Ni*4Mo2.
| Pays: |
China |
| N ° de modèle: |
3
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(Negotiable)
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