Professional Manufacture 5115 5120 5130 5135 5140 5145 5150 20cr 40cr Hydraulic Steel Cylinder Honed Tube Pipe

• Type: Seamless
• Technique: Cold Rolled
• Material: Carbon Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Model NO.: 5115 5120 5130 5135 5140
• Invoicing: by Actual Weight
• Thickness: 4mm-150mm
• Length: 12m
• Tolerance: ±5%, ±1%
• Oiled or Non-Oiled: Shop Primer and Shot Blasting
• Delivery Time: 7-20 Days
• Product Name: Seamless Alloy Steel Tube/Pipe
• Standard: DIN, GB, DIN 2391, DIN En 10305, GB/T 8713
• Grade: C20, St52, SAE1026, Ck45, 25mn
• Application: Hydraulic Pipe
• Transport Package: Customized or Regular Shipping According to Custom
• Specification: OD 4-2420MM
• Trademark: MEIDE
• Origin: Shandong, China
• HS Code: 7304319000
• Production Capacity: 200000 Ton/Tons Per Month

Product Description

Product Description

Honed Tube for Hydraulic Cylinder
Standard	DIN2391, EN10305, JIS G3445, ASTM A519, GB/T 8713...
Material	ST45, ST52, E355, E355SR, STKM13C, SAE1026, 20#, Q235B, CK45,1020.1010.1045.5140.5120.4140...
Heat treatment	BK+S
Specification	Outer diameter(mm):50-300mm Inner diameter(mm):30-250mm
I.D Tolerance	H8-H9
Length	3-9m (Customers usually choose the 4~5.8m)
Straightness	0.5mm/1000mm
ID roughness	RA 0.4micron(max)
Technology	Honed & SRB(SKIVED AND ROLLER BURNISHED )
Scope	Honed tube for hydraulic cylinder, swivel crane,  injection machine and construction machine application

Chemical Composition (%)

Steel Grade	Chemical Composition %
	C	Si	Mn	P	S	Al
				≤		≥
1020,20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	/
1045,45#	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
1026,25Mn	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	/

Mechanical property

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 (%)
1020,20#	≥550	≥8	≥520	≥375	≥15
1045,45#	≥640	≥5	≥600	≥520	≥10
16Mn	≥640	≥5	≥600	≥520	≥14
1026,25Mn	≥640	≥5	≥600	≥510	≥15
27SiMn	≥800	≥5	≥760	≥610	≥10
ST52	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥510	≥15

Material and purpose

Our Material	Material No.	Similar International Grade	Suitable for…
JIS G3445 STKM13C		ASTM MT1020 / BS ERWC3 / DIN ST45 / NF TU37b / ISO TS4	Carbon steel tubes for machine structural purpose
DIN 2391 ST52	1.0580	JIS STKM19A / ASTM 1524 / EN E355 / ISO TS18	Mechanical and automotive engineering
ST52 BK+S	1.0580		Low deformability without heat treatment after cold forming process and stress-relief annealing
DIN 2393 ST52.3	1.0570	ISO Gr.1	Construction of chemical plant, pipe work and mechanical engineering use,
ASTM A106	1.0405	JIS STPT410 / BS HFS410 / DIN ST45.8 / NF TU42c	Seamless carbon steel pipe for high temperature service Suitable for bending, flanging, welding and similar forming operations

Production process description

The raw material for rolling seamless carbon steel pipes is round tube blanks, which are cut into blanks by a cutting machine and sent to the furnace for heating via conveyor belts. The billet is fed into the furnace and heated at a temperature of approximately 1200 degrees Celsius. The temperature control in the furnace is a key issue. After the round tube is out of the furnace, it must be pierced through a pressure punching machine. The inner diameter of the steel pipe is determined by the length of the outer diameter of the drill bit of the sizing machine. After the steel pipe is sized, it enters the cooling tower and is cooled by spraying water. After the steel pipe is cooled, it will be straightened. After straightening, the steel pipe is sent to the metal flaw detector (or hydraulic test) by the conveyor belt for internal flaw detection. If there are cracks, bubbles, etc. inside the steel pipe, it will be detected. After the quality inspection of steel pipes, they must be selected strictly, and painted with serial numbers, specifications, and production batch numbers. It is hoisted into the warehouse by a crane.

Working method	range	ID	H8	H9	H10
cold drawn	25-250	30-50	+0.0390	+0.0620	+0.1000
cold rolling	25-150	50-80	+0.0460	+0.0740	+0.1200
cold drawn-honed	40-250	80-120	+0.0540	+0.0870	+0.1400
cold drawn-SRB	50-250	120-180	+0.0630	+0.1000	+0.1600
cold drawn -polished	40-250	180-250	+0.0720	+0.1150	+0.1850
cold drawn-polish-SRB	50-250	as required	as required	as required	as required

Packaging & Shipping

1. Bundle and pack.
2. Warning for inclined end or flat end or according to buyer's requirements.
3. Marking: According to customer requirements.
4. Apply varnish.
5. Plastic covers at both ends.

FAQ

Q1:who are we?
A:We are based in Shandong, China, start from 2022,sell to North America(60.00%),Western Europe(14.00%),South America(6.00%).
There are total about 11-50 people in our office.

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

Q3.what can you buy from us?Which ports are accepted for delivery?
A:Copper,Aluminum,Mould steel, Seamless carbon steel,Precision steel pipe,The steel plate,Alloy steel,Titanium,Custom machine parts.It can be delivered from Qingdao, Tianjin, Shanghai, Guangzhou and other ports.

Q4.why should you buy from us not from other suppliers?
A:Shandong Meide Import and Export Co., Ltd. has 25 years of production experience. With advanced precision production equipment
and modern large warehouses, has a stockpile of 200,000 tons of goods, has a number of long-term stable cooperative customers.

Q5.what services can we provide?
A:Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal;
Language Spoken:English,Chinese

Q6.Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.

Q7.How can we get your price ?
A:We need below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
6). The Drawing for Special Parts