FB-42 SPLIT SET BOLTZinc coating inspection will be checked from time to time to keep the coating reached customer requirements, and has a smooth and average coating split set bolt surface. Packing is same as other main ground support split set bolt (friction bolt stabilizer) which is 150 units per pallet. Wooden and Metal Pallet are both available.As an alternative friction bolt stabilizer of FB-47 Split Set Bolt used in applications, Dia.42mm has the same C shape of bolt body which can also offer a perfect and safety way for ground support as the FB-47 bolt does, also widely and popular used in rock and ground support in mining, tunnel and slope projects etc.By using the same high tensile steel strip with FB-39 Split Set Bolt to make the FB-42 split set bolt, we adjust our rollformer to change the diameter of bolt slightly from 39mm to 42mm to meet any special requirements of different customers, to be sure our bolt can be used in different environment of projects, meanwhile to satisfy the requirements of our customers.FAQ of FB-39 SPLIT SET BOLT1. What is Combi Plate and how does it make ? The FB-42 Split Set Bolt are made by high tensile steel strip, which is roll-formed into a longitudinal slot C shape tube along its entire length. A steel ring is full welded on the end of the tube by automatic welding device, which is to hold the plates to the rock surface.2. How to use and assemble ? A pull collar fixing at the ring end enables load testing during the bolt installation. The tapered end of friction bolt can be easily inserted into the drilled holes. Friction bolt can be installed with either hand held or mechanized equipment, such as a jackdrill, a stopper, a roof bolting jumbo, or any other type of drill.Latest NewsFB-39 SPLIT SET BOLT SPECIFICATION AND MECHANICAL PROPERTY

Dimensions				Physical Properties					Technical Data
Bolt Diameter	A		42mm	Yield Strength		Min. 345 Mpa (85KN)			Recommended Normal Bit Size		38-41mm
Bolt Length	B		0.9-3.0m			Typical 445Mpa(110KN)
Taper End Diameter	C		35mm	Tube Ultimate Tensile Strength		Min. 470 Mpa (115KN)			Typical Breaking Capacity		124KN
Taper Slot Wide	D		2mm			Typical 530Mpa(130KN)
Taper Length	E		65mm	Mass per Meter		1.92 Kgs			Min. Breaking Capacity		89KN
Bolt Slot Wide	F		20mm
Ring Location	G		3mm	Cross Section Area		245 mm²			Recommended Initial Anchorage		3-6 Tons               (27-53 KN)
Material Guage	H		2/2.5mm
Ring Wire Guage	I		6mm	Hole Diameter Range		38-41mm			Ultimate Axial Strain		Typical 21% (Thk<16mm)
Ring Open Gap	J		6-7mm

 

Code	Bolt Description			Diameter	Length	Surface Finish		Weight	Packing   QTY/Pallet		Ring ColorID
				(mm)	(mm)			(Kgs)
FB42-0900	Split Set Bolt 42-900			42	900	Untreated		1.70	150		­-
FB42-1800	Split Set Bolt 42-1800			42	1800	Untreated		3.23	150		­-
FB42-2100	Split Set Bolt 42-2100			42	2100	Untreated		3.76	150		­-
FB42-2400	Split Set Bolt 42-2400			42	2400	Untreated		4.30	150		­-
FB42-3000	Split Set Bolt 42-3000			42	3000	Untreated		5.37	150		­-
FB42-0900G	Split Set Bolt 42-900 HDG			42	900	Hot Dip Galvanized		1.80	150		­-
FB42-1800G	Split Set Bolt 42-1800 HDG			42	1800	Hot Dip Galvanized		3.38	150		­-
FB42-2100G	Split Set Bolt 42-2100 HDG			42	2100	Hot Dip Galvanized		3.94	150		­-
FB42-2400G	Split Set Bolt 42-2400 HDG			42	2400	Hot Dip Galvanized		4.50	150		­-
FB42-3000G	Split Set Bolt 42-3000 HDG			42	3000	Hot Dip Galvanized		5.63	150		­-

FB-42 SPLIT SET BOLT FEATURES ● As alternative main ground support bolt, FB-42 Split Set bolt is also made by High Tensile Steel, and different grade of material available depends on different use environment to save the cost of ground support. ● By it's C shape body, it is also the most easy and effective way for ground support, to create an instant full length of friction force all the way to the rock, driving together with mesh and plate into the hole to get a quick ground support. ● Galvanizing and untreated Split Set Bolts are both available. ● Full range of accessories available.Our high-effective PLC-Controled Rollformer and Auto Welders can keep our production capacity staying in top ranking in this line, at the same time to make sure the quality of our Split Set Bolt to meet the first class international standard requirements, that let us to have an chance to supply our split set bolts (friction bolt stabilizers) to many famous customers in the world.Welds on black bolt show the weld quality of our bolt, which is completely reached the highest international standard, and all of it is based on our strict quality management control (GMC), and quality and safety accident alerting system which already accompanied with production processes, to make sure a consistant and stable quality all throught the production.2. How to use and assemble ? The tubular C shape of the bolt generates a load transfer from the steel to the rock when installed into a slightly smaller diameter hole, and results in a frictional resistance pull-out load of the tube from the hole, and creating a full length radial pressure to the hole by increasing the contact surface of the steel to the rock due to its tubular shape, and when install onto the plate, it establishes a compressive force against the rock. When additional load bearing capacity is required, friction bolt can be grouted by cement grouts.