Customized Stkm-13CT H8 H9 Tolerance Honed Tube

Basic Info.

Brand	Global Metal
Model NO.	STKM-13CT
Technique	Hot Rolled
Surface Treatment	Polished
Section Shape	Round
MOQ	1 Tons
Sample	Free Provide
Inspection	Accept Third Party Inspectiom
Customize	as Per Customer Request
Transport Package	Standard Export Package
Type	Seamless
Material	Alloy Steel
Usage	Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
Trading Terms	EXW Fob CFR CIF
Delivery Time	3-7 days
OEM ODM	as Per Customer Request
Origin	Shandong Liaocheng
HS Code	7304399000

Product Description

We Mainly Supply Hydraulic Cylinder Tube,Honed Tube and Cold Finished Tube

1. Hydraulic Cylinder Tube——Used in the hydraulic cylinder of the heavy machinery, Cranes, excavator also forklifts. Material is various, mainly STKM-13CT ST52 CK45 and 1020. We can work and get the mechanical property of the clients need and extended the life of the hydraulic cylinder.
2. Honed tube —– used in Elevator buffer and Hydraulic Cylinder .This kind tube have a better roughness inner the tube,ra0.2-0.4um and can use directly in the hydraulic cylinder tube. Range: ID 50-250mm and Length can work at most 6M.
3. Cold finished tube–— Widely Used. Processing range 30-300mm, biggest length is 11M.

OD	GB/T3639	DIN2391(EN10305)	Our Tolerance	Best Quality
31-40mm	±0.15mm	±0.15mm	±0.05mm	±0.03mm
41-50mm	±0.20mm	±0.20mm	±0.05mm	±0.03mm
51-60mm	±0.25mm	±0.25mm	±0.08mm	±0.03mm
61-70mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
71-160mm	±0.30mm	±0.30mm	±0.10mm	±0.05mm
160mm-230mm	±0.50mm	±0.50mm	±0.40mm
Tolerance in WT	±0.12mm	±0.10mm	±0.05mm	±0.03mm
Process
Process	Diameter	Length
Cold Rolled	30-100mm	≤10 m
Cold Draw	30-250mm	≤10 m
Honing	40-500mm	≤10 m
Skived burnished	40-400mm	≤76m
HONED OR SRB TUBE TOLERANCE
Inner Diameter	H8	H9	H10
30mm	±0.033	±0.052	±0.084	5-30mm
30-50mm	±0.039	±0.062	±0.100	±0.080
50-80mm	±0.046	±0.074	±0.120
80-120mm	±0.054	±0.087	±0.140
120-180mm	±0.063	±0.100	±0.160
180-250mm	±0.072	±0.115	±0.185
250-315mm	±0.081	±0.130	±0.210

Detail photos

Product Parameters

Hydraulic Cylinder Honing Tube
Inside Dia (mm)	ID Tolerance (mm)				WT Tolerance  (mm)
	H7	H8	H9	H10
≤30	+0.021/0	+0.033/0	+0.052/0	+0.084/0	±7.5% >210mm ±10%
30 – ≤50	+0.025/0	+0.039/0	+0.062/0	+0.100/0
50 – ≤80	+0.030/0	+0.046/0	+0.074/0	+0.120/0
80 – ≤120	+0.035/0	+0.054/0	+0.087/0	+0.140/0
120 – ≤180	+0.040/0	+0.063/0	+0.100/0	+0.160/0
180 – ≤250	+0.046/0	+0.072/0	+0.115/0	+0.185/0
250 – ≤315	+0.052/0	+0.081/0	+0.130/0	+0.210/0
315 – ≤700	+0.057/0	+0.089/0	+0.140/0	+0.230/0

Steel Grade	Chemical Composition %
	C	Si	Mn	P	S	Al
				≤		≥
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	/
45#	0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	/
Q345B	≤0.2	≤0.5	1.00-1.60	0.03	0.03	/
Q345D	≤0.2	≤0.5	1.00-1.60	0.03	0.03	0.015
25Mn	0.22-0.29	0.17-0.37	0.70-1.00	0.035	0.035	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	/
ST52	≤0.22	≤0.55	≤1.6	0.025	0.025	/
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.04	0.05	/

Delivery Condition	Cold Finished (hard) (BK)		Cold Drawn and Stress-relieved (BK+S)
Steel Grade	Tensile Strength (Mpa)	Elongation (%)	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)
20#	≥550	≥8	≥520	≥375	≥15
45#	≥640	≥5	≥600	≥520	≥10
16Mn	≥640	≥5	≥600	≥520	≥14
25Mn	≥640	≥5	≥600	≥510	≥15
27SiMn	≥800	≥5	≥760	≥610	≥10
ST52	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥15

Production Line

Application

Packaging & Shipping