Rl718 Reinforcement Steel Mesh Used in Coal Mine Roadway Protection and Reinforcement

Reinforcing Mesh
Code	wire diameter	aperture	edge open	width	length	weight per sheet(kgs)
F62	5mm	200*200mm	200mm	2.4m	6m	20.92
F72	6mm	200*200mm	200mm	2.4m	6m	30.12
F82	7mm	200*200mm	200mm	2.4m	6m	41
F92	8mm	200*200mm	200mm	2.4m	6m	53.55

Specification of hard drawn mesh

Model	Pitch/ certres	Wire dia. (mm)	Length (mm)	Width (mm)	Newt cover(sqm)	Heyou reinforcing item	Cross section sqmm/m	Mass per sqm kg/sqm	No.of Longitudinal wire	No. of Cross Wire	Overhangs of Longitudianal wire	Overhangs of Cross wire	Weight(kg)
668	150	4.0	4650	1970	7.525	668L	83.8	1.315	14	31	75/75	10/10	12.44
665	150	5.3	4650	1970	7.525	665L	147.1	2.309	14	31	75/75	10/10	21.85
663	150	6.3	4650	1970	7.525	663L	207.8	3.263	14	31	75/75	10/10	30.87
665	150	5.3	6150	2420	12.760	665E	147.1	2.309	17	41	75/75	10/10	35.29
663	150	6.3	6150	2420	12.760	663E	207.8	3.263	17	41	75/75	10/10	49.86
662	150	7.1	6150	2420	12.760	662E	263.9	4.144	17	41	75/75	10/10	63.33
661	150	7.5	6150	2420	12.76	661E	294.5	4.624	17	41	75/75	10/10	70.67
300 Centres of hard drawn mesh
668	300	5.6	4950	2220	10.08	84/10	82.1	1.289	4*5.6mm+4*4.0mm	19	25/25	10/10	15.85
665	300	7.5	4950	2220	10.08	147/10	147.3	2.312	6*7.5mm+4*5.3mm	19	25/25	10/10	28.36
665	200	6.1	5050	2020	8.312	SE62 RES	146.1	2.294	11	26	25/25	10/10	24.79
665	200	6.1	5850	2420	11.93	SE62	146.1	2.294	13	30	25/25	10/10	34.10
665	300	7.5	6050	2420	11.58	SE73	147.3	2.312	9	21	25/25	10/10	36.51
665	300	7.5	5000	2270	10.08	SE73DE	147.3	2.312	8*7.5mm+2*5.5mm	19	7.5mm:25/25 5.5mm:25/25	10/10	30.69
664	200	7.0	5650	2220	10.432	SE72	192.4	3.02	12	29	25/25	10/10	39.93
662	200	8.0	5650	2220	10.432	SE82	251.3	3.946	12	29	25/25	10/10	52.16
661	200	9.0	6100	2420	12.76	SE92	318.0	4.99	12	29	25/25	10/10	71.65

Slab mesh reinforcement for footing slab,beam and piers.
The slab mesh reinforcement is used on footing construction,beam and piers of waffle rafts.The slab mesh was made by Heyou wire mesh factory accordance with AS NZS 4671-2001.
the popular specification is SL102,SL92,SL82,SL72,SL63,SL53,L8TM,L11TM,L12TM in the Australia and New Zealand civil engineeing. The slab mesh reinforcement includes reinforcement mesh and trench mesh.Aoriding to different construction site,they use the spcification of slab meshes are difference.
 

The full of slab mesh reinforcement specification as below:
 

REINFORCING MESH TO AS/NZS4671:2001 / TRENCH MESH
Code	STD UNIT	LONGITUDINAL WIRES		CROSS WIRES	MASS / KG
L8TM200	6 Metre	3 x 7.60 @ 100		4.00 @ 300	6.8
L8TM300	6 Metre	4 x 7.60 @ 100		4.00 @ 300	9.2
L8TM400	6 Metre	5 x 7.60 @ 100		4.00 @ 300	11.6
L8TM500	6 Metre	6 x 7.60 @ 100		4.00 @ 300	13.9
L8TM600	6 Metre	3 x 7.60 @ 100		4.00 @ 300	15.9
L8TM2400	6 Metre	25 x 7.60 @ 100		4.00 @ 300	72
L11TM200	6 Metre	3 x 10.70 @ 100		4.77 @ 300	13
L11TM300	6 Metre	4 x 10.70 @ 100		4.77 @ 300	17.7
L11TM400	6 Metre	5 x 10.70 @ 100		4.77 @ 300	22.3
L11TM500	6 Metre	6 x 10.70 @ 100		4.77 @ 300	26.8
L11TM600	6 Metre	7 x 10.70 @ 100		4.77 @ 300	34
L11TM2300	6 Metre	24 x 10.70 @ 100		4.77 @ 300	107.1
L12TM200	6 Metre	3 X 11.90 @ 100		4.77 @ 300	16.3
L12TM300	6 Metre	4 X 11.90 @ 100		4.77 @ 300	21.8
L12TM400	6 Metre	5 X 11.90 @ 100		4.77 @ 300	27.3
L12TM500	6 Metre	6 X 11.90 @ 100		4.77 @ 300	32.8
L12TM600	6 Metre	7 X 11.90 @ 100		4.77 @ 300	38.1
RIBBED RECTANGULAR MESH
Code	STD UNIT	LONGITUDINAL WIRES		CROSS WIRES	MASS / KG
RL718	6 x 2.4m Sheet	25 x 6.75 @ 100		30 x 7.60 @ 200	67
RL818	6 x 2.4m Sheet	25 x 7.60 @ 100		30 x 7.60 @ 200	79
RL918	6 x 2.4m Sheet	25 x 8.60 @ 100		30 x 7.60 @ 200	93
RL1018	6 x 2.4m Sheet	25 x 9.50 @ 100		30 x 7.60 @ 200	109
RL1118	6 x 2.4m Sheet	25 x 10.70 @ 100		30 x 7.60 @ 200	130
RL1218	6 x 2.4m Sheet	25 x 11.90 @ 100		30 x 7.60 @ 200	157
REINFORCING MESH TO AS/NZS4671:2001 / RIBBED SQUARE MESH 6.0 X 2.4 METRES
Code	STD UNIT	LONGITUDINAL WIRES		CROSS WIRES	MASS / KG
SL52	6 x 2.4m Sheet	10 x4.77 @ 200 + 4 x 4.00 @ 100		30 x 4.77 @ 200	21
SL62	6 x 2.4m Sheet	10 x 6.00 @ 200 + 4 x 4.24 @ 100		30 x 6.00 @ 200	33
SL72	6 x 2.4m Sheet	10 x 6.75 @ 200 + 4 x 4.77 @ 100		30 x 6.75 @ 200	41
SL82	6 x 2.4m Sheet	10 x 7.60 @ 200 + 4 x 5.37 @ 100		30 x 7.60 @ 200	52
SL92	6 x 2.4m Sheet	10 x 8.60 @ 200 + 4 x 6.00 @ 100		30 x 8.60 @ 200	66
SL102	6 x 2.4m Sheet	10 x 9.50 @ 200 + 4 x 6.75 @ 100		30 x 9.50 @ 200	80
SL81	6 x 2.4m Sheet	25 x 7.60 @ 100		60 x 7.60 @ 100	105
SQUARE MESH 300 X 300 SPACING TO AS/NZS4671:2001
Code	STD UNIT	LONGITUDINAL WIRES		CROSS WIRES	MASS / KG
SL53	6 x 2.4m Sheet	6 x 5.00 @ 300		20 x 5.00 @ 300	14
SL63	6 x 2.4m Sheet	6 x 5.00 @ 300		20 x 5.00 @ 300	21
NL= Number of longitudinal bars PL= pitch of longitudinal bars dL= diameter of longitudinal bars NC=Number of transverse bars PC=Pitch of transverse bars dC=Diameter of transverse bars			L= length of longitudinal bar B=Length of transverse bar u1=Overhang of longitudinal bars u2=Overhang of longitudinal bars u3=Overhang of transverse bars u4= overhang of transverse bars

What is the material of the slab mesh reinforcement?
We adopt R250N,D500L,D500N,D300E,D500E as material to make the slab mesh reinforcement, especially D300E and D500E is seismic grade.



3.Each sheet of reinforcing mesh panel shall include number of bars,pitch,length,width, and overhang dimensions. And the bar arrangement of reinforcing mesh panel has single bars,twin bars or combination of single bars and twin bars.
 4.The technical data of reinforcing mesh panle is contained composition and characteristic mechanical porperties of reinforcing steels.
4.1.1
Table1
Composition of reinforcing steels

Type of analysis	Chemical composition,% max
	All grades			Carbon equivalent value(Ceq)for standard grades
	C	P	S	250N	500L	500N	300E	500E
Cast analysis	0.22	0.050	0.050	0.43	0.39	0.44	0.43	0.49
Products analysis	0.24	0.055	0.055	0.45	0.41	0.46	0.45	0.51

4.1.2
Table 2
Characteristic mechanical properties of reinforcing steels 

Property	250N (Note1)	500L (Note1)	500N	300E (Seismic)	500E (Seismic)	Type of specified value
Yield Stress(Mpa) RekL                     RekU	≥250 ---------	≥500 ≤750	≥500 ≤650	≥300 ≤380	≥500 ≤600	CvL:p=0.95 CvU:p=0.05
Ratio        Rm/Re	≥1.08 ---------	≥1.03 -----------	≥1.08 --------	≥1.15 ≤1.50	≥1.15 ≤1.40	CvL:p=0.90 CvU:p=0.10
Unitform Elogation Agt(%)	≥5.0	≥1.5	≥5.0	≥15.0	≥10.0	CvL:p=0.90

Notes:

1. Grade 250N is supplied as plain round reinforcing steel complying with AS 3679.1,exceptthe tolerance of the diameter and roundness dosen't apply it.
2. For 500L steel bars,only requriement for wire diameter is less than 5.0mm is R_ekL≥500

Material certificate of reinforcing mesh as below:
 How can we conctrol our products quality for exporting Autralia?
Firstly,we purchase the material from Steel Factory and inspect chemical composition and mechnical property of reinforcing mesh panel in our in-house laboratary according to AS 1554.3.

Secondly,the panel size tolerances meassure way as:

1. Panel Size dimensions≤6m in length,there is 40mm tolerances.
2. Panel size dimensions>6m in length,the tolerance is ±0.7%
3. Wire diameter and mesh size measure and weld shear resistance test conformance to AS NZS 4761-2001 and as per contract.
4. Weigh the each bundle weight to calculate each panel weight.