Yn27c rock drill rod

Brief Introduction

• Raw material: It is 55SiMnMo, 320*480 large-section continuous casting billet, then rolling into 150*150 square billet after inserting core rod and seamless pipe.

• Production process: involving multiple processes, such as steel rolling, forging, normalizing, quenching and tempering, etc.

• Brand: QSAAA, QSAA, GTIII, G30

• Shank size: H22*108mm/ H25*108mm/H25*159mm.

• Angle: 7 /11/12 degree.

• Package: 5 pieces with a small bundle, 50 or 100 pieces with a big bundle.

Quality Level

According to the different choices of customers, we offer four quality products, including Grade A, Grade B, Grade C and Grade D. Customers can choose suitable drill rod according to different hardness of rock and types of rock drilling tools. Grade A drill rod QSAAA and GTIII can be applied to solid rock, III level or above and f≥12 rocks according to Protodikonov’s Hardness Coefficient of Rock. Grade B drill rod QSAA and G30 is suitable for IV level or above and f≥12 rocks, Grade C and Grade D drill rod suitable for IV level or below and f≤8 rocks.