Condition	New	Color	black or Customized
Applicable Industries	Construction works , Energy & Mining, Tunneling	Diameter	45MM-76MM
Video outgoing-inspection	Provided	Thread Type	R25,R28,R32,R38,T38,T45,T51
Machinery Test Report	Provided	Key words	Coupling Sleeve
Brand Name	Jcdrill	Application	Mining / Quarrying / Tunneling/Blasting
Type	Drill Sleeve	Length	150MM-235MM
Machine Type	Drilling Tool	Formation	Hard / Medium hard / Soft Rock Formation
Material	Carbide	Bridge type	Semi-bridge / Full-bridge
Processing Type	Forging	Raw Material	High quality alloy steel
Use	Mining

ST58
Drill Bit	Bit Dia.		NO x Button x Dia.			Flushing Hole		Weight
	mm	inch	Front	Gauge	Angle	Front	Side	（KG）
	spherical Buttons
	89	3 1/2	6x12	8x12	35°	2	1	4.1
	89	3 1/2	6x13	8x13	35°	2	1	4.1
	89	3 1/2	4x13,1x13	8x13	35°	4		4.1
	89	3 1/2	4x12,1x12	8x12	35°	4		4.1
	89	3 3/4	4x13,1x13	8x14	35°	4		4.6
	102	4	6x14	8x14	35°	2		6
	102	4	6x13	8x16	35°	2	1	6
	115	4 1/2	6x14	8x16	35°	2		7
	Parabolic Buttons
	89	3 1/2	6x12	8x12	35°	2	1	4.1
	89	3 1/2	6x13	8x13	35°	2	1	4.1
	89	3 1/2	4x13,1x13	8x13	35°	4		4.1
	89	3 1/2	4x12,1x12	8x12	35°	4		4.1
	89	3 3/4	4x13,1x13	8x14	35°	4		4.6
	102	4	6x14	8x14	35°	2		6
	102	4	6x13	8x16	35°	2	1	6
	115	4 1/2	6x14	8x16	35°	2		7
Drill Roll				Length		Dimaeter		Weight
				mm	inch	mm	inch	（KG）
				1525	5'	76	2 3/8	34
				1830	6'	76	2 3/8	40
				3660	12'	76	2 3/8	76.3

Minimum Order Quantity	N/A
Price
Packaging Details	Standard Export Delivery Package
Delivery Time	7days
Payment Terms	T/T
Supply Ability	Based on Detailed Order

ST58 Threaded Coupling Sleeve for Connecting Extension Drill Rod  Coupling sleeves, other name is Coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is required to join the adapter to the rod, ensuring the ends touch for efficient energy transmission. Couplings are also used to connect several rods to each other in the same way. Couplings have a middle stop to prevent over-threading on to the drill rod. We can manufactures semi-bridge, full bridge coupling sleeves for the percussive tools.