Heavy Duty Hydraulic Cylinders for Industrial Machinery

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Customized
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose, Customized
• Section Shape: Round
• Length: 5.8m, 6m, 11.8m, 12m or as You Required
• Customize: as Per Customer Request
• Sample: Free Provide
• Delivery Time: 15-21days
• Transport Package: Wooden Box Packaging
• Specification: 12M, 6m, 6.4M
• Trademark: ISO
• Origin: China
• HS Code: 7303001000
• Production Capacity: 100000 Ton/Tons Per Month

Product Description

FEATURED PRODUCTS

Description

Name : honed tubes, honing pipe, hydraulic cylinder tubes, pneumatic cylinder tubes, honed pipe, honing tube, seamless
honed steel tube, precision tubes, cold drawn honed tubes, skived tubes, skived and roller burnished tubes, skived pipes,
SRB tube, SRB pipe, hydraulic SRB tube, hydraulic cylinder skived tubes

EAST AI presents the E355 C20 DIN2391 St52 Steel Honed Tube, designed for hydraulic cylinders with precise H7, H8, H9 tolerances. This high-quality steel tube ensures exceptional durability and precision, meeting industrial standards for robust hydraulic applications.

Discover the pinnacle of durability with our High-Quality Seamless Steel Pipe, tailored for industrial applications. Crafted using advanced manufacturing techniques, this corrosion-resistant pipe offers unparalleled strength and precision. Ideal for high-pressure environments, our seamless tubing is designed to excel in oil, gas, and heavy-duty applications. Its superior construction ensures reliability and longevity, making it the go-to choice for professionals seeking efficiency and excellence in their operations.

Popular standard and steel grade:

EN10305-1	E355 E235 E410 E470 C45E
DIN2391-1	ST52 ST45 ST52.3
ASTM A519	SAE1020 SAE1045 SAE1026
GB/T	20# 45# 16Mn Q345B Q345D Q345E 42CrMo 27SiMn

Application: hydraulic cylinder, pneumatic cylinder,Jack, cylinder barrel
Manufacture Method: cold drawn, cold rolled, Hot rolled+Deep Hole Boring
Heat Treating Method/Delivery Condition:

BK	BKS	GBK	NBK	Q+T
+C	+SR	+A	+N	Q+T
Cold drawn	Stress relieved	Annealed	Normalized	QUENCHED + TEMPERED

Hydraulic & pneumatic tube size and parameters:

Manufacture method	Cylinder ID (mm)	Length (m)	Straightness (mm/m)	Tolerance on ID	Tolerance on WT	Roughness (μm)
Cold drawn	40-420	≤16M	0.2-0.5	Depends on requirement	±8%	0.8-1.6
Cold rolled	30-100	≥14M	0.2-0.5	Depends on requirement	±5%	0.8-1.2
Cold drawn-honed	40-420	14M	0.2-0.3	H8-H9	±8%	0.2-0.8
Cold drawn-skived & burnished	40-300	9M	0.2-0.3	H8-H9	±8%	≤0.4
Deep hole boring- honed	50-1000	12M	0.2-0.3	H8-H9	±8%	≤0.8
Deep hole boring- skived	50-300	9M	0.2-0.3	H8-H9	±8%	≤0.4

Mechanical property:

Final Supply Condition	Cold finished (Hard)(BK)		Cold drawn and stress-relieved (BK+S or + SR)			Hardness HB
Parameters	T.S obN/mm²	Elongation δ5%	T.S obN/mm²	Y.S OsN/mm²	Elongation δ5%
20# (A106B, ST45, E255)	>=550	>=8	>=520	>=375	>=12	175
45#(CK45)	>=650	>=5	>=600	>=500	>=10	190
Q345B(ST52, E355)	>=640	>=5	>=600	>=520	>=15	190
25Mn	>=640	>=5	>=600	>=510	>=15	195
27SiMn	>=840	>=5	>=720	>=600	>=10	210

Chemical Properties:
 

Material	C%	Mn%	Si%	S%	P%
20#	0.17-0.23	0.35-0.65	0.17-0.37	≤0.035	≤0.035
ST45	≤0.21	≥0.4	≤0.35	≤0.025	≤0.025
E255	≤0.21	0.4-1.1	≤0.35	≤0.025	≤0.025
45#	0.42-0.50	0.50-0.80	0.17-0.37	≤0.035	≤0.035
Q345B	≤0.20	≤1.70	≤0.50	≤0.035	≤0.035
E355	≤0.22	≤1.6	≤0.55	≤0.025	≤0.025
ST52	≤0.22	≤1.6	≤0.55	≤0.04	≤0.04
25Mn	0.22-0.29	0.70-1.0	0.17-0.37	≤0.035	≤0.035
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	≤0.035	≤0.035

Tolerance on ID:
 

ID	Tolerance for ID (μm)
	H7	H8	H9	H10
30	+21 0	+33 0	+52 0	+84 0
>30-50	+25 0	+39 0	+62 0	+100 0
>50-80	+30 0	+46 0	+74 0	+120 0
>80-120	+ 35 0	+ 54 0	+87 0	+140 0
>120-180	+40 0	+63 0	+100 0	+160 0
>180-250	+46 0	+72 0	+115 0	+185 0
>250-315	+52 0	+81 0	+140 0	+210 0
>315-400	+57 0	+89 0	+170 0	+230 0

Part of size list (ID*OD)
 

40*50		100*127		240*273
40*55		110*130		250*266
50*60		120*140		250*280
50*63		120*145		250*300
60*70		125*140		280*323
60*73		125*145		280*325
63*73		140*165		300*320
63*76		140*168		300*356
70*80		150*180		320*340
70*82		160*184		320*356
70*85		160*194		320*370
80*90		170*200		350*370
80*92		180*210		400*420
80*95		200*216
80*100		200*220
90*102		200*232
90*105		200*245
100*114		220*250
100*121		220*273

PROFESSIONAL TESTING

PRODUCTION PROCESS

Company Profile

Our Advantages

Packaging & Shipping

FAQ

Q1: Are You Manufacture or Trade Company?

We are manufacture,we have 10 years experience for supply Metal material and products in domestic.

Q2: How can we guarantee quality?
Always a pre-production sample before mass production;Always final Inspection before shipment;

Q3: What is your terms of payment ?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment

2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation

Q4: Can you provide Certificates for aluminum materials ?
Yes,we can supply MTC-Material Test Certificate.

Q5: Can you provide sample?
Yes, we can provide you sample, but you need to pay for the sample and freight firstly. We will return the sample fee after you make an order.