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St45 20# Cold Drawn Mild Steel Tubing

Large Image : St45 20# Cold Drawn Mild Steel Tubing

Product Details:

Place of Origin:	Jiangsu China (Mainland)
Brand Name:	JIANGSU HUACHENG
Certification:	ISO9001 14001 BV TUV PED DNV etc
Model Number:	HC

Payment & Shipping Terms:

Minimum Order Quantity:	5MT
Packaging Details:	Exporting package/wooden box package/Or per customers’ requirement
Delivery Time:	25~35days
Payment Terms:	30%T/T in advance or 100% L/C at sight
Supply Ability:	8000MT/Month

Detailed Product Description

Features:	Thick Wall	Application:	Hydraulic Cylinder\|Chemical
Delivery Condition:	BK\|BKS\|NBK\|Cold Finished\|Cold Drawn\|Stress-relieved	Grade:	ST52\|E355\|St45\|SAE1026\|20#\|27SiMn
Product Name:	Mild Steel Tubing	Section Shape:	Round
Standard:	SAE1026\|DIN 2391\|EN 10305	Technique:	Seamless\|Cold Drawn\|Cold-Drawn

Cold drawn St45 20# Mild Steel Tubing Honing Steel Pipes For Hydraulic Cylinder , DIN 2391 EN 10305

Quick Detail:

Products: Hydraulic cylinder tubes / Precision steel tube

Standard: DIN 2391 / EN 10305 /GB8713-88 / GB/T3639-2000

Grade: St52 / E355 / St45 / SAE1026 / 20# / 27SiMn
SIZE:(mm)

OD: 45mm ~ 500mm
WT: 3mm ~ 50mm

Description:

1. Variety

Processing form	I.D.mm	Length	Straightness	I.D.tolerance	I.D.Roughness(RA)
Cold-rolled	30-100	≤24M	0.3-1.0/1000	H8-H10	0.4-1.6um
Cold-drawn	30-250	≤24M		H8-H10	0.8-1.6um
Hone	40-500	≤24M		H8-H9	0.4-0.8um
SRB	50-250	≤24M		H8	0.1-0.4um

2. Material Specification and Ref. Document

ST52,BK+S OR NBK,DIN2391

OD:45-50mm WT:3-50mm

3. Chemical Compisition (%)

Steel grade	Chemical composition,%
	C	Si	Mn	P	S	Cr
	C	Si	Mn	≤
St45	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250
ST52(E355)	≤0.22	≤0.55	≤1.6	0.025	0.025	0.25
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.040	0.050	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250

4. Mechanical Properties

Delivery condition	BK Cold finished(hard)		BKS Cold drawn and stress-relieved
Steel grade	Rm Mpa	Elongation A5(%)	Rm MPa	ReH MPa	Elonggation A5(%)
ST45	≥550	≥5	≥520	≥375	≥15
ST52(E355)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥15
16Mn	≥640	≥5	≥600	≥520	≥14
20#	≥550	≥8	≥520	≥375	≥15

5. Supply Condition

Cold drawn seamless steel tube, stress relieved and honed or skived roller burnished

6. Surface Roughness

Ra = 0.4~0.8 Micron

7. Tolerances of Inner Dia.

Size of I.D	I.D Tolerance			Tolerance of wall thickness
Size of I.D	H8	H9	H10	±7.5% >210mm ±10%
30	+0.0330	+0.0520	+0.0840
>30-50	+0.0390	+0.0620	+0.1000
>50-80	+0.0460	+0.0740	+0.1200
>80-120	+0.0540	+0.0870	+0.1400
>120-180	+0.0630	+0.1000	+0.1600
>180-250	+0.0720	+0.1150	+0.1850
>250-315	+0.0810	+0.1300	+0.2100

8. Tolerance on Outer Dia.

≤ Dia 40 +/-0.2 mm

≥ Dia 40 ≤ Dia 100 +/-0.3mm

≥ Dia 100 +/-0.5mm

9. Appearance

Tube shall have a smooth internal and external surface consistent with cold working process, tube inner surface should be free from rust, scratches and other surface irregularities.

10. Scope

Hydaulic cylinder tube for swivel crane, injection machine and construction machine application

Applications:

Used in hydraulic system,nested card connector (pipe joints) with matching,,automobile and in the occasion where the high precision,brightness,cleanness and mechanical properties of the tube are required.

Competitive Advantage:

Huacheng Pipe Making Company is one of the largest seamless steel pipe manufacturers in China.We’ve passed API 5L,API 5CT, PED, BV, TUV certification and ISO quality system certification.With good quality and competitive price, we believe we could be your reliable supplier.

Factroy Pictures:

St45 20# Cold Drawn Mild Steel Tubing