Product Details

Precision cold drawn Seamless BKS cylinder tube

Company Information

Yantai Xinpeng Steel Pipe Co,.Ltd. is one of the best suppliers of the precision tube and hydraulic cylinder tube in North of China. Since 2002 Cold drawn machine set importing, Xinpeng become a big precision steel pipe manufacture with 500Mt month productivity in the next 12 years.

Products widely used in the hydraulic cylinder of the heavy machinery, Cranes, excavator, forklifts and the Petrol industry.

Hydraulic Cylinder Tube------Main products of Xinpeng,

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.

SRB tube ----- used in Elevatorbuffer 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.

Cold finished tube---- Widely Used. Processing range 30-300mm, biggest length is 11M.

Xinpeng Have passed ISo9001 verified from 2008; each tube of ours is strictly in quality control that can assure the product quality of Xinpeng.

Xinpeng also work on the Mild Seamless tube , as API oil and gas tube. fluid steel tube, structure pipe, and so on

Product Description

The product have high size accuracy , good inner and outer surface roughness properties.

precision tube application:

1.the damping pipe for the motor

2.the cylinder of the moptor absorbers

3.oilcan

4.the pipe for anti-ash mask

5.the cylinder of car absorbers

6.other hydraulic pressure damping product.

Specification	OD 33mm - 250mm(1"~16") with thickness of 3~30mm
Standard	GB/T8162,GB/T8163 and DIN/JIS/ASTM standard
	a. DIN Standard	10#(ST37-2,ST35-8),20#(ST42,ST45-4/8), 45#(DIN CK45),16mn(ST52.4) etc.
	b. JIS Standard	10#(STPG38,STS38,STB30,STB33,Stb35), 20#(STPG42,STB42,STS42,JIS S20C), 45#(JIS S45C), 16mn(STS49,STPT49) etc.
	c. ASTM/AISI Standard	10#(ASTM a106/53 Gr.B,A192,A179-C), 20#(ASTM A106/53 Gr.B, A178-C,A210-A-1,A315-B,AISI1020), 45#(AISI1045), 16mn(ASTM A210-C) etc.
Usage		boiler use,water transport, building, machinery, traffic, aviation, oil development etc. hydraulic cylinder
packing		Paint Varnish Coating , Plastic Caps and mark on the pipe
payment term		T/T or L/C at sight.
Method		cold drawning, hot rolling or hot expanding. honed and Srb
Min order		5tons, more quantity price will be lower.
Tolerancee:		according to customer's request
If you have any questions, please do not hesitate to let us know, thanks!

Specification:

Standard	DIN2391, DIN2445, EN10305, GB/T 3639, GB 8713
Grade	ST35(E235), ST37, ST24(E255), ST52(E355), 10#, 20#, 35#, 45#
O.D.	30MM-400MM
W.T.	2MM-30MM
Surface Treatment	bare, varnished, oiled, anti-corrosion coating as request Polished (ra0.8-1.6um)
Packing	1. bundle packing 2. marking as per customer's requests 3. paint on the pipe as per customer request 4. pipe caps as customer request
Condition of Delivery	1. NBK(+N) after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium 2. GBK(+A) after cold forming, annealing in non oxidizing medium protective gas 3. BK(+C) the final heat treatment after cold forming, therefore small steel pipe plastically, the plastically degree does not guarantee 4. BKW(+LC) after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring) 5. BKS(+SR) have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing again

Some Dimension:

OD x WT	OD x WT	OD x WT	OD x WT
26*2.8	26*3.0	38*2	38*3
48*5.0	70*2.8	90*10	130*14
48*5.5	70*3.0	90*12	130*16
48*6.0	70*3.5	90*14	130*18
48*7.0	70*4.0	90*16	140*2.5
48*8.0	70*4.5	95*2.0	140*2.8
48*9.0	70*5.0	95*2.2	140*3.0

Tolerance in Dimension:

OD	GB/T3639(GB8713)	DIN2391(EN10305)	Our Tolerence	Best Quality
4-30mm	±0.10mm	±0.08mm	±0.05mm	±0.02mm
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
Tolerance in WT	±0.12mm	±0.10mm	±0.05mm	±0.03mm

Process	Diameter	Length	Precision	Inner Hole Roughness
Cold Rolled	30-100mm	≤12 m	H8-H10	0.4-1.6
Cold Draw	30-250mm	≤12 m	H8-H10	0.8-1.6
Honing	20-130mm	≤6 m	H8-H9	0.4-0.8
Rolling	40-400mm	≤7 m		0.4

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
315-400mm	±0.089	±0.140	±0.230

Mechanical Properties: ( can do better)

Condition	Material Grade	T.S (MPa)	Y.S (MPa)	Elongation (%)
BKS	ST35 (10#)	≥420	≥315	≥14
BKS	ST45(20#)	≥520	≥375	≥12
BKS	ST52(16Mn)	≥580	≥420	≥10
GBK	ST35 (10#)	≥315		≥35
GBK	ST45(20#)	≥390		≥32
GBK	ST52(16Mn)	≥490		≥30
NBK	ST35 (10#)	340-470	≥235	≥32
NBK	ST45(20#)	440-570	≥255	≥30
NBK	ST52(16Mn)	490-630	≥335	≥28

Xinpeng Have passed ISo9001 2008 verified .

Packaging & Shipping

1.Tubes will be tied in bundles by steel strips, Internal and external oil coating, and end plastic caps.

External packing by knit bags.

2. Wooden package

3. buddle package directly ( mild seamless)

all with rust oil protected

4. Shipment time: according to customer's request , usually about 30 Days.

Why you choose us as your best choice?

Our quality is the top five in China. Raw material is mainly from some famous refinery steel mills, such as BAO STEEL, Tianjin, and Chengdu etc, which are the best and largest raw material manufacturers in China.
We have been through ISO9001:2008 international quality system certification.
Warranty period for our honed tubes and chrome bars is 2 years. For some special or important customers, the period is 5 years.
All the orders, records of production and inspection would be kept for 5 years
High Precision:

Honed tube (Roughness of tube is 0.2μm and straightness is less than 0.3mm/1000mm), Product details are completely according to International Standard, (Most of domestic mills don’t do this in order to reduce cost)

Delivery time is very fast. The average delivery time is about 30 days after confirming the orders.

Our Services

1. Cargo track service during transporting and feedback service after cargo is loaded on board

2. Flexible terms of payment by

3. Big discount for repeat customers

4. Smooth delivering procedure

5. Payment Terms: T/T, L/C And so on.

FAQ

Transportation: by sea
20' FCL (means the length than 5,800mm)
40' FCL (means the length than 11,800mm)
Bulk cargo (means the quantity is more than 200MT)
With regards to other length or quantity, it should be taken by clients themselves
Delivery time: 10-30days to the dispatch port after receipt of T/T or L/C at sight
Optional: wooden box; caps; vanished coating. Clients should pay for this fee
Payment: T/T or L/C at sight, T/T 100% in advance (the order less than 30MT)
Price item: FOB, CFR, CNF, C&F, CIF
Origin: China
Third party inspection: BV, SGS, Lloyds. The Expense need to stand by clients.

Xinpeng Factory View ( with this photos, just like you have been to Xinpeng exactly)

Raw Material warehouse ( Different steel Grade with Different color)

Xinpeng Workplate

Xinpeng difference kind mold

Xinpeng meeting room

Xinpeng Office

Application:

widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, the internal combustion engine, air compressor, construction machinery, forestry machinery, etc.