Skived ID Finished Tubes for Cylinder

• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Model NO.: ID40-500
• Surface Treatment: Oiled
• Usage: Oil/Gas Drilling
• Section Shape: Round
• Process: Cold Drawn
• Transport Package: in Bundel , with Plastics on Both Ends, Oil Coated
• Specification: ID40-500
• Trademark: Hengtong
• Origin: China
• HS Code: 7304900000
• Production Capacity: 1000 Ton Per Month

Product Description

Contact: Flora Ni
 
 



ST52 seamless steel honing tube for hydraulic cylinder:
ST52/16Mn/E355 or A106B/20#/C20 material. ID size from 40-400, H8, BKS condition. 
We also have cold drawn tubes/ pre honed tubes/ ready to honed tubes./skived tubes
 

Material & Chemical Composition:

 DIN2391 standard ST52, EN10305 standard E355, 16Mn, ASTM A106B, C20/20#, CK45

Material	C	Si	Mn	S(≤)	P(≤)	Cr	Ni	Mo	other
A106B / C20#	0.17-0.23	0.17-0.37	0.35-0.65	0.035	0.035	≤0.25	≤0.30		Cu≤0.25
CK45#	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	≤0.25	≤0.30		Cu≤0.25
Q345B	≤0.20	≤0.55	1.00-1.60	0.040	0.040	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20	Alt≥0.015
ST52 E355 16Mn	≤0.20	≤0.55	1.00-1.60	0.045	0.045	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20	16Mn
25Mn	0.22-0.30	0.17-0.37	0.70-1.00	0.035	0.035	≤0.25	≤0.25
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.030	0.030
42SiMn	0.39-0.45	1.10-1.40	1.10-1.40	0.030	0.030
42CrMo	0.38-0.45	0.17-0.37	0.50-0.80	0.025	0.025	0.90-1.20		0.15-0.25

Accuracy :

Working method	Cylinder ID (mm)	Length (m)	Straightness (mm/m)	Tolerance on ID	Tolerance on WT	Roughness (μm)
Cold drawn	40-320	≤12M	0.2-0.5	/	±5%	0.8-1.6
Cold rolling	30-100	≥12M	0.2-0.5	/	±5%	0.8-1.2
cold drawn-honed	40-500	8M	0.2-0.3	H8-H9	±5%	0.2-0.8
Cold drawn-skived	40-400	9M	0.2-0.3	H8-H9	±5%	≤0.4
Hole boring-honed	320-400	8M	0.2-0.3	H7-H9	±8%	≤0.8
Hole boring-skived	320-400	9M	0.2-0.3	H8-H9	±8%	≤0.4

 

 

Mechanical property:

Final Supply Condition	Cold drawn finished (BK)		Cold drawn and stress-relieved (BKS / SR)			Hardness HB
Parameters	Tensile Strength (MPA)	Elongation δ%	Tensile Strength (MPA)	Yield Strength (MPA)	Elongation δ%
C20 / 20#/A106B	≥550	≥8	≥520	≥470	≥12	175
45#(CK45)	≥650	≥5	≥600	≥520	≥12	207
16Mn(ST52,E355)	≥640	≥5	≥600	≥520	≥15	190
25Mn	≥640	≥5	≥600	≥510	≥15	195
27SiMn	≥840	≥5	≥800	≥720	≥10	230