ISO certified OEM steel casting marine spare parts --Zhaoqing OLYM Metal Products Co.,Ltd do OEM lost wax investment casting as per your drawings or samples or your requirements.

Material and Dim tolerance according to –America and German and Japan standard;

Serving customers with a package solution in terms of optimizing design of part, casting, machining, heat-treatment and finish so that our customers can cut down costs in their products and obtain value-added parts.

We have a material laboratory equipped with advanced apparatus and machines like spectrum analyzer/three coordinates measuring machine which ensures chemical compositions of material/dimension tolerance to be correct.

Products cover wide application: chemical industry, mining industry, engineering machineries, auto parts, maching parts, marine parts, automobile Casting Parts, architectural Casting Parts, and general Casting Parts, railway industry, construction machinery industry, blades and vanes for turbines, glass pool fencing, staircase balustrades, balcony/terrace balustrade ,textile industry, medical parts, machining mechanical parts

DIMENSION TOLERANCE

Linear Tolerance

Nominaldimension (mm)		Length，width，height (mm)					Centre line distances (mm)
Nominaldimension (mm)		D1		D2		D3			D1	D2
From	To	Tolerance	Field	Tolerance	Field	Tolerance		Field	Tolerance	Tolerance
0	6	土0.10	0.2	土0.08	0.16	土0.06		0.12	土0.25	土0.16
6	10	土0.12	0.24	土0.10	0.2	土0.06		0.12
10	14	土0.15	0.3	土0.12	0.24	土0.09		0.18
14	18	土0.20	0.4	土0.14	0.28	土0.09		0.18
18	24	土0.25	0.5	土0.17	0.34	土0.12		0.23	土0.32	土0.20
24	30	土0.30	0.6	土0.20	0.4	土0.14		0.27	土0.32	土0.20
30	40	土0.37	0.74	土0.25	0.5	土0.17		0.33	土0.50	土0.30
40	50	土0.44	0.88	土0.30	0.6	土0.20		0.39	土0.50	土0.30
50	65	土0.52	1.04	土0.38	0.76	土0.23		0.46	土0.71	土0.45
65	80	土0.60	1.2	土0.46	0.92	土0.27		0.53	土0.71	土0.45
80	100	土0.68	1.38	土0.53	1.06	土0.30		0.6	土0.90	土0.60
100	120	土0.76	1.52	土0.60	1.2	土0.33		0.66	土0.90	土0.60
120	140	土0.84	1.68	土0.65	1.3	土0.36		0.71	土1.15	土0.85
140	160	土0.92	1.84	土0.72	1.44	土0.38		0.76
160	180	土1.02	2.04	土0.80	1.6	土0.42		0.81
180	200	土1.12	2.24	土0.88	1.76	土0.43		0.86	土1.80	土1.00
200	225	土1.28	2.56	土0.95	1.9	土0.47		0.93
225	250	土1.44	2.88	土1.05	2.1	土0.51		1.02
250	280	土1.64	3.28	土1.15	2.3	土0.56		1.12	土2.20	土1.25
280	315	土1.84	3.68	土1.25	2.5	土0.63		1.26	土2.20	土1.25
315	355	土2.10	4.2	土1.40	2.6	土0.71		1.42	土2.60	土1.60
355	400	土2.40	4.8	土1.60	3.2	土0.80		1.6	土2.60	土1.60

D1: General dimension tolerances
D2: Applicable to important dimensions requiring close tolerances
D3: Premium tolerances require additional operations at extra cost,
Only applied to a few special dimensions

Angle Tolerance: 土0.5° to土1°
Straightess:0.005”per inch