Steel Pipe S355jr St52 Srb H8 SAE1045 DIN2391 Bk Bkw Bks Gbk Nbk Q+T Cold Drawn Hot Rolled Honed Srb Honing Seamless Mild Steel Tube Pipe for Hydraulic Cylinder

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: bks1045
• Surface Treatment: Oiled
• Usage: Hydraulic/Automobile Pipe, Food/Beverage/Dairy Products, Machinery Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Surface: Black Varnished/3PE/3lpe/Galvanized
• Pipe Ends: Plain or Bevel Ends
• Coupling: with Coupling or Socket
• Length: 1m~12m
• Production Standard: SAE1020/1045/1026 St45 Ck45 St52 E355
• Material Grade: C20/C45/S355/E355/S235/St37/St52/St44
• Product Name: Cold Drawn Seamless Honed Precision Tube
• Package: Plywood Boxes
• ID Tolerance: 0.1mm Max
• Straightness: 1/1000
• ID Roughness: Ra 0.4micron(Max)
• Tolerance: H7 H8 H9 H10
• Delivery Condition: Bk, Bks, Nbk
• Inspection: Inner Surface NDT(Nondestructive Testing)
• Transport Package: Wrapped by Plastic Bags Andsteel Strips in Bundles
• Specification: OD: 16~400mm; THK: 3~40mm
• Trademark: Boerking
• Origin: Tianjin, China
• HS Code: 73041930
• Production Capacity: 10000ton/Year

Product Description

Steel Pipe S355jr St52 Srb H8 SAE1045 DIN2391 Bk Bkw Bks Gbk Nbk Q+T Cold Drawn Hot Rolled Honed Srb Honing Seamless Mild Steel Tube Pipe for Hydraulic Cylinder

 

PRODUCT INTRODUCTION
1. Description: Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder. 

2. Commodity: SAE1026 cold drawn seamless honed tube

3. Size range: 40mm*30mm-580mm*500mm

4. Available steel grade: 

SAE/AISI:	SAE1020, SAE1026, SAE1045, SAE4130, SAE4140
DIN:	ST52, ST52.3, ST52.4
EN:	E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:	20#, 45#, 16Mn, Q345B, Q345C, Q345D, Q345E, 25Mn, 27SiMn,

5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring

6. Delivery condition: 

BK	BKW	BKS	GBK	NBK	Q+T
+C	+LC	+SR	+A	+N
Cold rolled	Cold drawn	Stress relieved	Annealed	Normalized	Quenched+Tempered

7. Bore treatment: Honing, skiving&roller burnishing

8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes. 

9. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes. 

10. Standard export packing: In bundles tied with steel strips. Int&ext oil coating. End plastic caps. External packing by PVC bags and knit bags. 

11. Customized packing and marking can be provided upon request. 

12. H8 tolerance: 

ID range	Tolerance	ID range	Tolerance
18< d ≤30	+0/+0.033	180< d ≤250	+0/+0.072
30< d ≤50	+0/+0.039	250< d ≤300	+0/+0.081
50< d ≤80	+0/+0.046	300< d ≤315	+0/+0.081
80< d ≤120	+0/+0.054	315< d ≤400	+0/+0.089
120< d ≤180	+0/+0.063	400< d ≤500	+0/+0.097

13. Difference between honed tube and skived&roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness. 

Standard Size:
I.D(mm)	O.D(mm)	WT(mm)	I.D(mm)	O.D(mm)	WT(mm)	I.D(mm)	O.D(mm)	WT(mm)
40	50	5	90	100	5	140	156	8
40	52	6	90	105	7.5	140	160	10
40	55	7.5	90	110	10	140	165	12.5
40	58	9	90	114	12	140	168	14
50	60	5	95	105	5	140	170	10
50	65	7.5	95	110	7.5	140	180	20
50	70	10	100	110	5	150	170	10
60	70	5	100	115	7.5	150	175	12.5
60	72	6	100	120	10	150	180	15
60	75	7.5	100	125	12.5	160	180	10
60	80	10	100	127	13.5	160	185	12.5
63	73	5	100	130	15	160	190	10
63	75	6	110	125	7.5	160	200	20
63	76	6.5	110	130	10	170	190	10
63	78	7.5	110	140	15	170	195	12.5
63	80	8.5	115	130	7.5	170	200	15
63	83	10	115	135	10	180	200	10
70	80	5	120	135	7.5	180	205	12.5
70	82	6	120	140	10	180	210	15
70	85	7.5	120	145	12.5	180	220	20
70	90	10	120	150	15	200	220	10
75	85	5	125	140	7.5	200	225	12.5
75	90	7.5	125	145	12.5	200	230	15
75	95	10	125	150	12.5	200	235	17.5
80	90	5	125	152	13.5	200	245	22.5
80	92	6	125	155	15	220	250	15
80	95	7.5	125	160	17.5	220	270	25
80	100	10	130	145	7.5	220	273	26.5
80	102	11	130	150	10	240	270	15
80	105	12.5	130	160	15	250	290	20
80	110	15	135	160	12.5	250	299	24.5
Special requirement						230.5	254	11.75

Mechanical Property:
Delivery  condition		cold finished(hard)(BK)				Cold drawn and stress-relieved(BK+S)
Steel grade		Rm MPa			Elongation A5(%)	Rm MPa	ReH MPa	Elonggation A5(%)
20#		≥550			≥8	≥520	≥375	≥15
16Mn		≥640			≥5	≥600	≥520	≥14
ST52(E355)		≥640			≥5	≥600	≥520	≥14
SAE1026		≥640			≥5	≥600	≥510	≥12
45#		≥650			≥5	≥600	≥510	≥12

Chemical Composition:
Steel grade		Chemical composition,%
		C		Si	Mn	P	S	Cr
						≤
20#		0.17-0.24		0.17-0.37	0.35-0.65	0.035	0.035	0.25
16Mn		≤0.2		≤0.5	1.00-1.60	0.03	0/03	0.25
ST52(E355)		≤0.22		≤0.55	≤1.6	0.025	0.025	0.25
SAE1026(25Mn)		0.22-0.28		0.15-0.35	0.6-0.9	0.04	0.05	/
45#		0.42-0.5		0.17-0.37	0.5-0.8	0.025	0.02	0.25

Products shows





Production Process:


Packing and Shipping:

Company information:

 

Tiajin Boerking Steel Pipe Co., Ltd is one of companies specializing in producing and exporting

steel pipes and pipe fittings in China.

Our main products are API 5L GR.B,X42,X52,X60,X70,X80 PSL1/PSL2 Seamless Pipe, ASTM A106/SA106 Seamless Pipe, ASTM A53 Seamless Pipe, A335/SA179/SA192/A333 Seamless Pipe, and AISI1020 AISI1045 Seamless Pipe and API 5CT oil and casing steel pipes.

Our company's featured products are customized diameter steel pipe(such as 318mm,216mm,

 254mm...),cold drawn steel pipe made to order, hot expanding steel pipe, 609.6mm~1020mm

 SEAMLESS steel pipe, hollow section with customized size.

 The annual yearly output is about 30,000 tons which is exported to all over the world, such as Korea, Malaysia, Singapore, Vietnam, Philippines, Thailand, Myanmar,HongKong, Taiwan, India, Pakistan, Bangladesh, Iran, Egypt, Australia, United Kingdom, Serbia, Guatemala, Argentina and so on. Tianjin Boerking Steel Pipe Co., Ltd believes in honesty,mutual respect and development, consistantly high quality and we continue to seek improvements by listening to our clients and giving due attention to their specifications and suggestions. Looking forward to your enquiry!

 

 

FAQ

Q: What about your payment term?

A: Usually T/T or L/C, 30% deposit and 70% before delivery.

Q: what about your standard delivery date

A: 15~25 days after receiving deposit 

Q: How about your capacity?

A: For steel pipes, 60,000 tons per month, 720,000 tons per year.  For pipe fittings, 30,000 tons per year

Q: what about your package

A: Usually as per customer's requests.

Common packing information: Small size in bundles, big size in bulk, some sizes with plastic cap to protect both ends, seaworthy packaging. 

Q: What is your main market &main customers

A: We have 15years experience on steel pipes & pipe fittings.  Our main market includes China, Singapore etc.  Main Customers including HYST, Keppel group etc.

Q: If products have some quality problem,how would you deal with?

A: We will responsible for all of our quality problems.

Q: How to get accurate price / quotation from you?

A: Please kindly tell us below details and we'll send our quotation to you ASAP:

1) Pipe's outer diameter             2) Wall thickness                            3) Section Shape (round, square etc.)

4) length for each pipe               5) steel grade                                  6) Standard (e.g.: API 5L)

7) order quantity                          8) Designation (BK, BKW etc.)     9) Trade Terms

P.S.: more detailed information you clarified, more exact price we provided.

Contact:

Contact:
TIANJIN BOER KING STEEL PIPE
CONTACT: CINDY YANG
CELL: [phone]

If you have any question, please feel free to contact me by the email or telephone!