Product Details

About our products

ASTM Cold drawn 4140 80 Ksi Yield tubing

Description	sae1026 hydraulic cylinder honed seamless steel pipe
Standard	ASTM ,GB ,DIN, EN AISI etc
Material	10#-45#,16Mn,ST35-ST52,Q345
O.D	30mm-250mm
W.T	2mm-30mm
Length	According to the customer’s need
Surface/End	According to the customer’s request
Certificate	ISO9001 2008
Technique	Cold drawn /rolled ,hot rolled ,etc.
Surface	Polished, black, bright. or according to the customer’s acquirement
Application	Hydraulic cylinder , automobile, oil drilling etc.
Package	We usually bundle with steel strips ,branding parcel or wooden box outside or according to the customer’s need
Delivery Time	1.The products in stock will delivery immediately received the deposit 2.According to the order quantity, the delivery time ranges from ten days to twenty days

Chenical composition

Material	C	Si	Mn	S(≤)	P(≤)	Cr	Ni	Mo	other
C20#	0.17—0.23	0.17—0.37	0.35—0.65	0.035	0.035	≤0.25	≤0.30		Cu≤0.25
CK45#	0.42—0.50	0.17—0.37	0.50—0.80	0.035	0.035	≤0.25	≤0.30		Cu≤0.25
Q345B	≤0.20	≤0.55	1.00—1.60	0.040	0.040	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20	Alt≥0.015
ST52 E355 16Mn	≤0.20	≤0.55	1.00—1.60	0.045	0.045	V:0.02-0.15	Nb:0.015-0.06	Ti:0.02-0.20	16Mn
25Mn	0.22—0.30	0.17—0.37	0.70—1.00	0.035	0.035	≤0.25	≤0.25
27SiMn	0.24—0.32	1.10—1.40	1.10—1.40	0.030	0.030
42SiMn	0.39—0.45	1.10—1.40	1.10—1.40	0.030	0.030
42CrMo	0.38—0.45	0.17—0.37	0.50—0.80	0.025	0.025	0.90—1.20		0.15—0.25

Finished products

The processing

The testing

The packaging and supply condition

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

SUPPLY CONDITION

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 plastic, the plastic 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

About our company

We produce all kinds of specification seamless steel tube , such as cold drawn/rolled precision seamless steel tube ,honed tube ,SRBtube ,etc. And these products are application for hydraulic cylinder, automobile, oil drilling and so on.

ABOUT OUR SERVICES

Sufficient Forging, Heating, Machining Equipment
-In-house Inspection Instruments for Quality Controlling
-Competitive Price & High Quality Assurance
-Fast, Effective and Efficient Services
-Directly supplier
-Experienced Professinonals on Communications