As the name implies, hollow anchor rods are hollow in the middle. Generally, they are used as hollow grouting anchor rods, which have good reinforcement effects on rock and soil. Mortar anchor rods use solid threaded steel bars, which have weaker anchoring force.

42CrMo steel belongs to the category of ultra-high strength steels. It features high strength and toughness, good hardenability, and no obvious temper brittleness. After quenching and tempering treatment, it has a relatively high fatigue limit and the ability to resist multiple impacts, as well as e

20G high-pressure boiler tube is a kind of seamless tube. The manufacturing method is the same as that of seamless tube, but there are strict requirements on the steel type used to manufacture steel tube. According to the use temperature, it is divided into general boiler tube and high-pressure boiler tube.

API 5L seamless & welded pipeAmerican Piping Products stocks API 5L pipe in grades B, X42, X52, X60, X65 & X70.SizesSeamless from 2″ NPS to 36″ ODERW from 2″ NPS to 24″ ODDSAW from 20″ to 48″ ODScopeANSI / API 5L specifies the manufacture of two product levels (PSL1 and PSL2) of seamless and welded

The anchor rod body is the grouting pipe. After the grouting liquid is pressed, it can not only anchor the rod body, but also part of the grouting liquid will penetrate into the cracks of the anchor hole when the grouting pressure is large, which plays a role in reinforcing the surrounding rock. The upper hole should be equipped with a grouting plug and an exhaust pipe.