MTC-ASTM A252 Spiral Steel Pipe_ASTM A106 GR B Carbon ...
MTC, short for mill test certification, is a certification needed per EN10214. And all inspected item must in accordance with ISO 9001.,For metal related products, there are two certifications. One is EN10214 3.1. The other is EN10214 3.2.
Fastener Standards - ASTM International
ASTM fastener standards specify and test the properties of mechanical fasteners such as bolts, nuts, screws, and other hardware fasteners.