Shanxi Lanyuan Technology Co.,Ltd.

GFRP is a better option than traditional galvanized steel in high risk environments such as subsea tunnels or where groundwater has a high chloride content.

 

HEALTH & SAFETY

Safety and occupational health are rightly at the forefront of our work. Anyone who has lifted a steel rockbolt knows how heavy they are. There is still a lot of manual handling in bolting operations. GFRP has a much lower density (25% of steel) so using GFRP bolts reduces the potential harm from prolonged manual handling of rock bolts.

 

  

 

ENVIRONMENTAL IMPACT

As we become more aware of our negative impact on the environment, there is a growing need to reduce this impact. One of the ways to do this is to use products which have inherently less impact on the environment, such as GFRP. After studying, GFRP bolts could have up to 40% less environmental impact than an equivalent twin coated steel bolt. In part this benefit arises from the lower weight of the GFRP bolts which weigh a quarter of the equivalent steel bolts. However, GFRP was better in all ten categories examined and not just in terms of embodied carbon ,What is less well known is that it also featured GFRP bolts as the permanent rock support.

 

FRP Rock Bolt Test Unit				MGSL18	NGSL20	MGSL22	MGSL24	MGSL27
Rod	Surface			Uniform appearance, no bubble and flaw
	Nominal Diameter/mm			18	20	22	24	27
	Tensile load/KN			160	210	250	280	350
	Tensile Strength/MPa			600	600	600	600	600
	Shearing strength/MPa			150	150	150	150	150
	Torsion/Nm			45	70	100	150	200
	Antistatic			3*107	3*107	3*107	3*107	3*107
	    Flame Resistance	  Flaming	s	≤6	≤6	≤6	≤6	≤6
			s	≤2	≤2	≤2	≤2	≤2
		  Flaming burning	s	≤60	≤60	≤60	≤60	≤60
			s	≤12	≤12	≤12	≤12	≤12

 

FRP bolts/Fiber reinforced plastics bolts/GFRP Anchor Rock Bolts Parameter

Unit		Hollow Rock bolt			Self-drilling Rock bolt
Diameter	mm	12/25	12/28	32/15	12/25	12/28	32/15
External	mm	25	28	32	25	28	32
cross section	mm^2	345	450	563	345	450	563
Thread distance	mm	10	10	10	12.7	12.7	12.7
Thread direction		right	right	right	left	left	left
Tensile Load	kN	230	300	380	250	330	400
Tensile strength	Mpa	650	650	650	650	650	650
Torsion	Nm	80	110	200	120	200	250
Shear strength	MPa	150	150	150	150	150	150
Elongation	%	2.5	2.5	2.5	2.5	2.5	2.5
E-modulus	Gpa	40	40	40	40	40	40
weight	g/m	642	896	1156	642	896	1156

 

 

APPLICATIONS

There are different types of GFRP bolts, such as solid GFRP bolts, Hollow GFRP bolts,GFRP Spin bolts,Self-drilling GFRP bolts, Cable GFRP bolts,Injection GFRP bolts,GFRP Bolts Mesh,GFRP rebar reinforcement,etc.

1. GRFP BOLTS is widely used in highways, bridges, airports, terminals, stations, water conservancy projects, underground engineering and other fields

2. Suitable for corrosive environments such as sewage treatment plants, chemical plants, electrolysis tanks, manhole covers, and coastal defense projects.

3. Suitable for military engineering, confidential engineering, special engineering, etc.

 

Mining support

Face bolting

Soil nail

Slope stabilization

Permanent application

Temporary support

Subway tunnel

Building construction

Seawall damming

Rock supporting

foundation pit wall

Port of foundation pit

Roadway support

 

Tunnel construction.

 

 

 

ACCESSORIES

Mostly in Domed Plate and Nut, Swivel Plate and Nut,Flat Plate and Nut,Steel and GFRP couplers,

Diameter (mm)	Length (mm)	Pallet dimension (mm)	Standard value of tensile strength(MPa)	Ultimate load of the bolt(KN)	Bearing capacity of end connection and whorl (KN)	Bolt torque (N.m)
16	1200~1800	120×120×6	≥300	80	≥50	≥40
18	1200~2000	120×120×10	≥300	100	≥60	≥40
20	1200~3000	140x140x8 150×150×8	≥300	120	≥70	≥40
22	1600~3000	150×150×10 170x 170x 10	≥300	140	≥80	≥40
24	1800~3000	150×150×10	≥300	160	≥90	≥40

 

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