China Supplier Steel Bar Grating Stair Treads - I Shape Plain And Serrated Steel Grating – Chengsen

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China Supplier Steel Bar Grating Stair Treads - I Shape Plain And Serrated Steel Grating – Chengsen Detail:

I Type Steel Plate Surface Treatment

Hot galvanizing, cold galvanizing, painting, dipping rust oil, no treatment (general stainless steel without treatment).

I Type Steel Plate Production Method

I type steel plate is composed of load flat steel and horizontal bar arranged according to a certain spacing of longitude and latitude, using 200 tons of hydraulic resistance welding automation equipment welding into the original plate, after cutting, opening, rimming and other processes processed into customer requirements.

Steel Grating I Type, Bearing Bars At 30mm Pitch

Type	Beam width	Flange thickness	Abdominal thickness	Flange width	Theory weight	Load and deflection	ClearSpan
Type	Beam width	Flange thickness	Abdominal thickness	Flange width	Theory weight	Load and deflection	200	400	600	800	1000	1200	1400	1600	1800	2000	2200	2400	2600	2800	3000
G757/30/50I	75	7	4	12	126.1	U	6460	1615	717	403	258	179	131	100	79	64	53	44	38	32	28
G757/30/100 I	75	7	4	12	120.7	D	0.09	0.37	0.83	1.47	2.3	3.31	4.5	5.88	7.47	9.25	11.26	13.3	15.89	18.11	20.99
G657/30/50I	65	7	4	10	110.1	U	4862	1215	540	303	194	135	99	75	60	48	40	33	28	24	21
G657/30/100I	65	7	4	10	104.8	D	0.11	0.42	0.95	1.69	2.65	3.83	5.22	6.77	8.71	10.67	13.07	15.36	18.05	20.94	24.29
G607/30/50I	60	7	4	10	99.1	U	4216	1054	468	263	168	117	86	65	52	42	34	29	24	21	18
G607/30/100I	60	7	4	10	96.1	D	0.11	0.46	1.03	1.83	2.86	4.13	5.65	7.31	9.4	11.62	13.85	16.81	19.29	22.82	25.97
G557/30/501	55	7	4	8.5	90.3	U	3502	875	389	218	140	97	71	54	43	35	28	24	20	17
G557/30/100I	55	7	4	8.5	87.3	D	0.13	0.5	1.13	2	3.15	4.53	6.17	8.03	10.29	12.82	15.11	18.44	21.32	24.55
G507/30/50I	50	7	4	8	83.2	U	2912	728	323	182	116	80	59	45	35	29	24	20	17
G507/30/100I	50	7	4	8	80.2	D	0.14	0.55	1.24	2.21	3.44	4.94	6.78	8.85	11.09	14.09	17.14	20.37	24.01
G505/30/50I	50	5	3	8.5	62.8	U	2085	521	231	130	83	57	42	32	25	20	17	14
G505/30/100I	50	5	3	8.5	59.8	D	0.14	0.55	1.23	2.2	3.44	4.91	6.73	8.79	11.06	13.57	16.97	19.95
G445/30/50I	44	5	3	8	56.5	U	1654	413	183	103	66	45	33	25	20	16	13
G445/30/100I	44	5	3	8	53.5	D	0.16	0.62	1.4	2.5	3.92	5.56	7.59	9.86	12.71	15.6	18.7
G385/30/50I	38	5	3	7	49.9	U	1246	311	138	77	49	34	25	19	15	12
G385/30/100I	38	5	3	7	46.9	D	0.18	0.73	1.64	2.89	4.51	6.52	8.93	11.64	14.82	18.22
G325/30/50I	32	5	3	6	43.3	U	884	221	98	55	35	24	18	13	10
G325/30/100I	32	5	3	6	40.3	D	0.21	0.86	1.94	3.44	5.37	7.68	10.74	13.35	16.6
G255/30/50I	25	5	3	4.5	35.1	U	544	136	60	34	21	15	11
G255/30/100I	25	5	3	4.5	32.1	D	0.28	1.1	2.47	4.45	6.75	10.06	13.77

1. The even load walkway plate for a single person should be over 3.0KN/m2.
2. The even load walkway plate for a double-direction should be over 5.0KN/m2.
3. The even load walkway plate for many people should be over 7.5KN/m2.

Steel Grating I Style Bearing Bars At 40mm Pitch

Type	Beam width	Flange thickness	Abdominal thickness	Flange width	Theory weight	Load and deflection	ClearSpan
Type	Beam width	Flange thickness	Abdominal thickness	Flange width	Theory weight	Load and deflection	200	400	600	800	1000	1200	1400	1600	1800	2000	2200	2400	2600	2800	3000
G6757/40/50 I	75	7	4	12	101	U	4845	1211	538	302	193	134	98	75	75	59	48	40	33	28	24
G757/40/100 I	75	7	4	12	95.6	D	0.09	0.37	0.83	1.47	2.29	3.31	4.49	5.89	5.89	7.44	9.27	11.35	13.33	15.66.	18.16
G657/40/50 I	65	7	4	10	88.5	U	3646	911	405	227	145	101	74	56	56	45	36	30	25	21	18
G657/40/100 I	65	7	4	10	83.2	D	0.11	0.42	0.95	1.69	2.64	3.83	5.21	6.75	6.75	8.72	10.68	13.1	15.54	18.1	21
G607/40/50 I	60	7	4	10	78.9	U	3162	790	351	197	126	87	64	49	49	39	31	26	21	18	16
G607740/100 I	60	7	4	10	75.9	D	0.11	0.46	1.03	1.83	2.86	4.1	5.61	7.35	7.35	9.41	11.46	14.13	16.28	19.33	23.23
G557/40/50 I	55	7	4	8.5	71.9	U	2626	656	291	164	105	72	53	41	41	32	26	21	18	15
G557/40/100 I	55	7	4	8.5	68.9	D	0.13	0.5	1.13	2.01	3.15	4.49	6.14	8.14	8.14	10.22	12.72	15.14	18.48	21.37
G507/40/50 I	50	7	4	8	66.9	U	2184	546	242	136	87	60	44	34	34	26	21	18	15
G507/40/100 I	50	7	4	8	63.9	D	0.14	0.55	1.24	2.2	3.45	4.95	6.74	8.93	8.93	11	13.62	17.18	20.42
G505/40/50 I	50	5	3	8.5	50.4	U	1564	391	173	97	62	43	31	24	24	19	15	12
G50540/100 I	50	5	3	8.5	47.4	D	0.14	0.55	1.23	2.19	3.43	4.95	6.64	8.8	8.8	11.22	13.6	16.05
G445/40/50I	44	5	3	8	45.5	U	1241	310	137	77	49	34	25	19	19	15	12
G445/40/100I	44	5	3	8	42.5	D	0.16	0.62	1.4	2.49	3.88	5.61	7.68	10.01	10.01	12.73	15.64
G385/40/50I	38	5	3	7	40.3	U	935	233	103	58	37	25	19	14	14	11
G38540/1001	38	5	3	7	37.3	D	0.18	0.73	1.63	2.91	4.55	64	9.06	11.47	11.47	14.54
G325/40/50I	32	5	3	6	35.1	U	663	165	73	41	26	18	13	10	10
G325/40/100I	32	5	3	6	32.1	D	0.21	0.86	1.92	3.43	5.33	7.69	10.37	13.71	13.71
G255/40/50I	25	5	3	4.5	28.7	U	408	102	45	25	16	11	8
G255/40/100 I	25	5	3	4.5	25.8	D	0.28	1.1	2.47	4.36	6.86	9.86	13.41

Notes:
1. U: safe and uniformly distributed load, KN/m2.
2. D: the maximum deflection corresponding to the listed safe load.
3. Theoretical weight is the weight of 1m length of hot dipped galvanized grating.

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