Piping material selection according to (flow medium, operating condition, life time, fabrication & most economical)
Insulating flange kits include gasket, sleeve & washer are provided to prevent galvanic corrosion between dissimilar metals check detail
Stainless steel pipe to be isolated from steel supports by red rubber tape or stainless steel shims
Allowable stresses. B31.1 allowable are lower than B31.3 because b31.3 plants generally have a plant life of about 20 to 30 years. B31.1 on the other is about 40 years, B31.1 is MORE conservative than B31.3
For chemical anchor bolts M16–> use drill bit 18mm –> hole depth +13mm & M20–> use drill bit 24mm –> hole depth +17.5mm
(PQR)procedure qualifications record: suggested procedure of welding which reflected in WPS if accepted