Large anti-corrosive flange
Anti-corrosive flange mainly adopts oil coating,galvanized and other anti-corrosive measures.Anti-corrosive flange can be divided into container flange and pipe flange according to the connected parts; According to the structure, there are integral flange, looped flange and threaded flange. The production technology of anti-corrosive flange is mainly divided into forging,casting,cutting and rolling. Large anti-corrosive flanges can be divided into pushing, pressing, forging, casting and so on.
Galvanized BS4504 forged plate flanges
Radiation cross-linked polyethylene thermal shrinkage zone anti-corrosive process is mainly used for large anti-corrosive flanges. Radiation cross-linked polyethylene heat shrinkable strip is a new type of steel pipe anti-corrosion material with good performance and easy operation. It is composed of base material and hot melt adhesive layer. The main standards SY/T0413 — 2002 buried steel pipeline polyethylene anti-corrosive coating technical standards, SY/T4054 — 2003 radiation cross-linked polyethylene radiation cross-linked polyethylene thermal shrinkable belt (set), SY/T0415 — 1996 buried steel pipeline rigid polyurethane foam plastic anti-corrosive insulation technical standards. The material of large anti-corrosive flange is mainly carbon steel, which is suitable for oil and gas transportation engineering and chemical industry.
Flange coating with interthane 990 Polyurethane
Main standards for large anticorrosive flange: GB / T 9114-2010 steel pipe flange with neck thread, GB / T 9115-2010 steel pipe flange with butt welding, GB / T 9116-2010 steel pipe flange with neck flat welding, GB / T 9117-2010 steel pipe flange with neck socket welding, GB / T 9118-2010 steel pipe flange with neck loose sleeve of butt welding ring.
Large anti-corrosive flanges in the chemical industry mainly use heat-shrinkable sleeve, which is designed for the anti-corrosion of welding joints of buried and overhead steel pipelines and the insulation patching of insulation pipes.