size:1.315"-20"
steel grade:J55,K55,N80-1,N80-Q,L80,P110,Q125,13CR-80,13Cr-110,super 13cr
thread type:EUE,NUE,SC,LTC,BTC, thread for replacement clasp
surface treatment:surface using phosphate or black finish,painted again
package:in wooden case,in bundles
length:2,FT,4FT,6FT,8FT,10FT,12FT,15FT,20FT
type:PIN X PIN,PIN X BOX,cccording to the drawing process