H19 H22 Hex Shank Integral Drill Rod With Tungsten Carbide Tip For Underground Mining In 400 - 8000mm Custom Length
Product Overview
Premium H19 H22 hex shank integral drill steel rods manufactured from Z708 55SiMnMo alloy steel. Custom lengths available from 400 - 8000mm with drill head diameters of 24 - 44mm. Engineered for high impact utilization and anti breakage performance, designed for handheld jackhammers, air leg rock drills, and underground mining small blasthole drilling applications.
These one piece integral drill rods (also known as monolithic integral drill steel) serve as core top hammer rock drilling consumables to maximize output efficiency across quarrying, underground coal mining, and small blast hole construction projects. HENGLONG factory's customized integral drill steel utilizes premium alloy steel blanks and high hardness tungsten carbide tips, delivering exceptional anti fatigue performance, strong structural toughness, and industry leading abrasion resistance.
Applications
This series of hex integral drill steel rods perfectly matches handheld jackhammers, air leg rock drills and other lightweight pneumatic rock drilling machines. Extensively applied in underground mine tunneling, metal ore mining, coal mine excavation and stone quarry small blasthole drilling. Suitable for borehole drilling requirements with standard hole diameters ranging from 24mm to 44mm.
The final drilling effect and service life depend on two core raw materials: high-grade alloy steel substrate and premium tungsten carbide inserts. HENGLONG implements strict metallurgical processing and carbide sintering standards for every batch, guaranteeing stable drilling performance even under harsh hard rock and high-frequency impact working environments.
Frequently Asked Questions
What shank sizes do your one piece integral drill rods support?
We supply mainstream hex shank integral drill steel in two standard sizes : H22×108mm and H19×108mm, compatible with most lightweight pneumatic rock drills. Custom shank specifications can be produced per client drawings.
What length options are available for integral drill steel?
Standard stock lengths range from 400mm to 6000mm for regular mining projects. For special tunneling demands, we provide extended customized lengths up to 8000mm (1'4" to 21').
What steel materials are adopted for your integral drill rods?
Two high performance alloy steel grades are available : Z708 (40SiMnCrNiMo) and 55SiMnMo. Both feature outstanding fatigue resistance and toughness to extend service life under frequent percussion work.
Why does integral drill steel work better than separate bit and rod sets?
The integrated structure boosts percussive force utilization by 18 - 25%, delivering faster drilling speed. When worn, you only replace the whole drill rod instead of single bits, preventing carbide tip cracking and tapered rod end fracture to cut maintenance costs.
What drilling hole diameters can these integral drill steels handle?
Our integral drill bits cover bore diameters from 24mm to 44mm, ideal for small hole blasting, tunnel bolting and underground mine excavation work.
Which rock drilling machines match your integral drill steel?
They fit handheld rock drills, air leg jackhammers and other small power pneumatic drilling machines, widely used in underground metal mines, coal mines and stone quarries.
What factors determine the service life of integral drill rods?
Two core factors determine drilling performance and durability : the alloy steel body quality and the grade of tungsten carbide inserts. HENGLONG implements strict raw material inspection to guarantee consistent wear resistance for harsh rock drilling conditions.
Can bulk orders get customized integral drill steel solutions?
Yes. We support customized length, head diameter and packaging for wholesale mining tool orders, with factory direct pricing for global mining, quarry and engineering distributors.
