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Pump housing

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Pump housing Specification:

Pump housing Specification
Pump housing	type Φ(mm)	Outer Diameter range(mm)	Inner Diameter range(mm)
338	86*76	86-86.73	76.15-76.20
400	106.6*88.9	101.9-101.6	88.98-88.90
513	130*115	130.5-130.0	115.06-114.99
538	136.4*122.4	136.78-136.4	122.50-122.42
562	143*130	143.26-142.88	130.15-130.07
675	171*158	171.83-171.45	158.82-158.72
862	219*200	219.46-219.08	200.10-200.02
950	241.3*225	241.68-241.30	225.55-225.43
Material	Tesile strength	Yield strength	Elongation	Hardness
Q345B	620Min	520Min	15Min	190Min
9Cr1Mo	552Min	415Min	10Min	220Min
25Mn	620Min	510Min	15MIn	190Min
316L	480Min	177Min	35Min	180Min
C1026	620Min	510Min	15Min	190Min

1. Chemical Composition

Steel grade	Chemical composition %
	C	Si	Mn	P	S		Cr	Ni		V	AI
				≤						≥
C20	0.17-0.24	0.17-0.37	0.15-0.65	0.035		0.025	0.250		0.250	/	/
CK45	0.42-0.5	0.17-0.37	0.5-0.8	0.025		0.025	0.250		0.300	/	/
Q355B	≤0.2	≤0.5	1.0-1.6	0.030		0.030	0.030		0.250	0.080	0.015
Q355D	≤0.2	≤0.5	1.0-1.6	0.030		0.025	0.250		0.250	0.150	/
E355(ST52)	≤0.22	≤0.55	≤1.6	0.025		0.025	0.250		0.250	/	/
SAE1026	0.22-0.28	0.15-0.35	0.6-0.9	0.040		0.050	/		/	/	/
4130	0.28-0.33	0.15-0.35	0.4-0.6	0.040		0.040	0.80-1.10		/	/	/
4140	0.36-0.43	0.15-0.35	0.705-1.0	0.040		0.040	0.80-1.10		/	/	/

2.Mechanical Property:

Delivery condition	Cold finished(hard)(BK)		Cold drawn and stress-relieved(BK+S)
Steel grade	Rm MPa	Elongation A5%	Rm MPa	ReH Mpa	Elongation A5%
C20	≥550	≥5	≥520	≥375	≥15
CK45	≥645	≥5	≥600	≥520	≥10
Q355B	≥640	≥5	≥600	≥520	≥14
Q355D	≥640	≥5	≥600	≥520	≥14
E355(ST52)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥520	≥15

3.Tolerance:

Tolerance	I.D Tolerance			Tolerance of wall thickness
Size of I.D.	H8	H9	H10	Tolerance of wall thickness
30	0.033	0.052	0.084	<120mm(O.D) ±5% ≥120mm up to 210mm ±7.5% >210mm ±10%
>30-50	0.039	0.062	0.1
>50-80	0.046	0.074	0.12
>80-120	0.054	0.087	0.14
>120-180	0.063	0.1	0.16
>180-250	0.072	0.115	0.185
>250-315	0.081	0.13	0.21
>315-400	0.089	0.14	0.23

4.Processing Form

Processing form	I.Dmm	Length	Straightness	I.D tolerance	I.D Roughness (RA)
Honed	40-500	≤12M	0.5-1/1000	H8-H9	0.4-0.8um
SRB	50-250	≤12M	0.5-1/1000	H8	0.1-0.4um

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