JIS G3459 Stainless steel pipes pipe fittings materials data you may also check non standard sizes pipe fitting weight online calculation, pipe fitting surface area online calculation,pipe fitting surface volume online calculation from our pipeline tool link: https://alloypipefitting.com/fitting-calculator.html For the pipe fitting material, please check butt-weld-fitting-standard-data JIS G3459 Stainless Steel Pipe is used for the pipings