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

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

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.

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