Bigboltnut is a largest manufacturer and supplier of petrochemical stud bolt and nuts that is used extensively in petrochemical projects for flange joints in high temperature pipelines and also on rigs and offshore platforms in various parts of the world. Some of the major grades and sizes manufactured are given Astm A193 grade b7, SS316, SS316 l and diameter is ½ to 3. high temperature pipelines or cross country pipelines which are transporting fuel and crude oil often use alloy steel grade B-7, B-7M grade stud bolts for flange joints. We are exporting petrochemical grade stud bolts to over 60 countries all over the world. 

At Bigboltnut, we recognise the profound impact that the correct industrial fasteners can have. We offer a wide range of products, including high-tensile bolts and stainless steel fasteners,We provide high-class fastening solutions for construction, manufacturing, automotive, and other industries to assure project success and safety.