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Customized Tapered Drill Rods Steels

China King-Long Brand Rock Drilling Tools
Best and most suitable manufacturer and supplier as long as you need flexible delivery time, customer-made design and 24 hours day and night production for fast delivery schedule, One Stop Delivery is also available as long as you trust us, we provide the world fastest before and after sales service in your city office or mining office, we are not just a good listener, we also provide our honest solutions to solve your problems or in a word, we are a family and we are looking for friends and being friends first. King-Long Drilling Consumables, once you get used to it, you can never get rid of it, we are not drugs to our clients, we just can not help getting addicted to providing FAST and FLEXIBLE Service 7/24Hours.

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King-Long Brand Rock Drilling Tools

A: 50 Years Rock Drilling Production Experience;

B: Country-owned Enterprise Built in year of 1970.

C: 20 Years Drill Steels Study Research Efforts.

D: 10 Years Tungsten Carbides Study Research.

E: 20 Years Sophisticated Production Experience and Rock Drilling Business Service more than 25 countries all around the world.

China King-Long Material is proud to introduce King-Long Hollow Rock Drilling Steels: are made from the high steel you can have ever come to expect from China supplier and factories. Our King-Long Brand King-Long Hollow Rock Drilling Steels have state-of-the-art treatment is unique- charming and phosphating- manufactured to close tolerances. Our rigorous quality controls at all our manufacturing units ensure that King-Long Brand

Brief Introduction

Hollow rock-drill steel used for rolling the hollow rock-drilling rod is a special alloy steel containing Fe base, W, C, Si, Mn, Cr and V. Its advantages are long service life and high quality.


55SiMnMo: Hollow Drills Steels used for H19 H22 H25 Taper Drill Rods.

35SiMnMoV: D32 D38 Hollow Drill Steels.

Z708 sanbar 61/ 40SiMnCrNiMo: Round Drill Steels, D45 D51.

Sanbar 23/ 25CrNi3Mo Steels: Drill Rod with thread connection. surface hardness HRC58-62. Core hardness: HRC43-45.

Photos of KING-LONG Brand King-Long Hollow Rock Drilling Steels




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