42 Steel Pipe Supply bolt Steel Pipe, steel anchor pipe, grouting small catheter tube tunnel anchor pipe steel flower, also known as steel anchor pipe, grouting small catheter, advance support tube. Steel radial direction is rotated by 90 degrees drilled hole and made a slurry flower tube, grouting hole layout along a spiral around the pipe, steel tapered front end processing, in order to facilitate into the rock. Its diameter ranging from 42-114, wall thickness between 4-6mm, depending on the project design needs to drill a hole corresponding to the diameter of the pulp. Our factory is a professional manufacturer of hollow bolt, perennial supply of major high-speed railway tunnel support hollow bolt, self-drilling anchors, grouting small pipe, large diameter pipe roof, low price, welcome new and old customers come to us, we will give you the best price and service satisfaction. Steel Pipe Applications for rock crushing relatively weak, fractured rock joints is more appropriate, better construction and anchoring. Steel Pipe Features 1. grouting cement mortar liquid penetration into the rock formation in the body, can effectively improve the mechanical properties of rock and soil physics, improving the ability to rock their skid. 2. Pipe stay in rock grouting, anchoring and provide some slip resistance, and improve the security and stability factor strata. Steel Pipe conventional specifications Φ42mm, Φ48mm, Φ50mm, Φ60mm, Φ89mm, Φ108mm