The latest in 2011: National standards for the quality of seamless steel tubes There are many types of seamless steel tubes, which are suitable for a variety of industry needs. Its required market demand is in the same type of steel tubes, which is a widely used steel material. It is suitable for: structural uses, fertilizer equipment, ships, geological drilling, oil drilling, automotive axles, conveying fluids, boilers and other industries.
Drum brush is divided into long hair, medium hair, short hair three kinds, its performance is the length of the drum brush hair, rather than the thickness and length of the drum itself, brush hair is usually divided into wool and chemical fiber two kinds.
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Seamless steel pipe concrete use specification standards:
1. Structure for seamless steel pipe: GB8162-99
2. High-pressure seamless steel pipe for chemical fertilizer equipment: GB6479-1999
3. Seamless steel tubes for ships: GB5312-1999
4. Cold-drawn cold-rolled precision seamless steel pipe: GB3639-1999
5. Various alloy tubes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo.
6. Geological drilling seamless steel pipe: YB235-70
7. Seamless Steel Pipe for Oil Drilling: YB528-65
8. Seamless Steel Pipe for Petroleum Cracking: GB9948-88
9. Petroleum drill collar special seamless tube: YB691-70
10. Seamless Steel Tube for Automotive Axle:GB3088-1999
11. Pipes used to transfer fluids: GB8163-99
12. Seamless steel tubes for boilers: GB3087-1999
13. Boiler high pressure seamless pipe: GB5310-95 (ST45.8-iii type)
Different rollers will brush different effects, long hair rollers will brush out some fine texture, concave and convex feeling, similar to the texture effect. The paint surface after short wool roller besmear is more uniform, smooth, without concave and convex feeling, in the wool is between the two.
Roller brush is mostly made of wool and foam plastic, which can be divided into paint drum brush, hair drawing drum brush, floor paint drum brush, flat coating drum brush, etc., mainly used for large-area paint rolling in architectural decoration engineering. And can be used for coating and rolling all kinds of paint, such as: latex paint, anti-rust paint, internal and external wall paint, wallpaper glue, etc.
Note:
The use of drum brush as long as the straight brush can be wiped, if you want to daub evenly, the drum is best in the paint bucket to be fully absorbed, and then take out a few rolling on the inclined plane, press out the excess paint and then begin to brush the wall.
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