20# Seamless Cold-Rolled Precision Steel, Round Steel Tube

• Customization: Available
• After-sales Service: Warranty
• Warranty: 10year
• Model NO.: OD: 15-260mm
• Type: Seamless
• Technique: Cold Rolled
• Material: Carbon Steel
• Surface Treatment: Polished
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Oval
• Raw Material: 10# 20# 35# 45# 20cr 40cr 20crmn 304 201 310S
• Production Process: Cold Rolled / Cold Drawn
• Surface: Bright
• Standard: GB/T3639-2018
• Pipe Type: Seamless Pipes
• Diameter: 15mm-260mm
• Wall Thickness: 1.0mm-30mm
• Application: Manufacture of Precision Mechanical Parts and Engi
• MOQ: 1 Ton
• Shape: Round
• Price Term: CIF CFR Fob Ex-Work
• Steel Grade: Q195 Q235
• Brand: Hanbang
• Tolerance: +/-1%
• Outer Diameter: 10mm-250mm
• Transport Package: Standard Airworthy Packaging
• Specification: 10mm-260mm diameter
• Trademark: Shandong Hanbang
• Origin: China
• HS Code: 730431900
• Production Capacity: 50000ton/Year

Product Description

Detailed Photos

 

Product Name	Precision  Steel Pipe
Technique	Hot Rolled/Cold Rolled/Cold Drawn
Material	10#,20#,35#,45#,Q345B 20cr,40Cr,20CrMo 6mn 27simn 304 201 310S etc.
Standard	ASTM A106 ASTM A53 ASTM A179 ASTM A210 ASTM A213 GB/T3639 DIN 2448 DIN1629 DIN1626 DIN2391 DIN2444 EN10025etc.
Outside Diameter	10mm-1020mm or as your request
Thickness	2mm-80mm or as your request
Length	Single random length/double random length 5m-14m 2-12m
Application	Oil pipe line, Drill pipe, Hydraulic pipe, Gas pipe, Fluid pipe,Boiler pipe,Conduit pipe, Scaffolding pipe pharmaceutical and ship building etc.

Chemical composition(%) of precision pipe's commin grade

Standard	Grade	C	Si	Mn	s	p	Cr
GB/T 699 GB/T 3639 GB3077 GB/T1591 GB/T 8163-2018	10#	0.07~0.13	0.17~0.37	0.35~0.65	≤0.035	≤0.035	\
	20#	0.17~0.23	0.17~0.37	0.35~0.65	≤0.035	≤0.035	\
	35#	0.32~0.39	0.17~0.37	0.35~0.65	≤0.035	≤0.035	\
	45#	0.42~0.50	0.17~0.37	0.50~0.80	≤0.035	≤0.035	\
	40Cr	0.37~0.44	0.17~0.37	0.50~0.80	≤0.035	≤0.035	0.08~1.10
	25Mn	0.22~0.29	0.17~0.37	0.70~1.00	≤0.035	≤0.035	≤0.25
	Q345B	≤0.20	≤o.50	≤1.7	≤0.035	≤0.035	≤0.3
	37Mn5	0.30~0.39	0.15~0.30	1.20~1.50	≤0.015	≤0.020	\

Conventional mechanical properties of precision pipe

Standard	Grade	Delivery Conditions
		BK(hard)		BKW(soft)
		Tensil Stength(MPa)	Make percentage elongation(%)	Tensile stength(MPa)	Make percentage elongation(%)
GB/T 3639 GB 3077	20#	≥550	≥10	≥490	≥15
	25Mn	≥600	≥12	≥540	≥15
	Q345B	≥620	≥12	≥550	≥15
	45#	≥645	≥8	≥625	≥15
	40Cr	≥784	≥14	\	\
	37Mn5	≥784	≥14	\	\

Dimensional tolerances of inner diameter
 

Standard	Inner Diameter(mm)	Inner Diameter Deviation(mm)
GB1801-79		H7	H8	H9	H10
	30	0~+21	0~+33	0~+52	0~+84
	30-50	0~+25	0~+39	0~+62	0~+100
	50-80	0~+30	0~+46	0~+74	0~+120
	80-120	0~+35	0~+54	0~+87	0~+140
	120-180	0~+40	0~+63	0~+100	0~+160
	180-250	0~+46	0~+72	0~+115	0~+185
	250-315	0~+52	0~+81	0~+170	0~+210
	315-400	0~+57	0~+89	0~+140	0~+230

 

 

 

 

Packing and transportation

   1. wood pallet packing cover with water-proof paper
    2. steel pallet packing cover with water-proof paper
    3. wood box packing
    4. steel pallet packing cover with steel box
    5. in bundles with steel strip no extra packing
    6. packaged as customers' requirments.

Company introduction

Shandong Hanbang Materials Co., Ltd.was founded in 2011 and mainly produces seamless steel pipes.  In recent years, while retaining the advantages of seamless steel pipes, it has added comprehensive industrial companies with automobile radiators, intercoolers and industrial heat exchange radiators as the main body according to the advantages of the region.  The company is located in Liaocheng City, Shandong Province, with convenient transportation and high-speed railways running through the whole territory.

Since its establishment, the company has been committed to producing various high-quality products of automobile radiators, intercoolers, industrial radiators and precision seamless steel pipes. It has now become a supplier integrating R&D, production, sales and service.



The company has advanced production and testing equipment and is the most competitive manufacturer of radiators, heat exchangers and seamless steel pipes. It has strong technical force, complete testing equipment and a perfect quality assurance system.

The company adheres to the principle of "taking customers as the center and providing customers with satisfactory products".   It is committed to continuously strengthening quality management, improving and improving product quality.   The products are exported to North America, South America, the Middle East, Europe, Africa and other countries, and are well received by customers.


In addition, our company has been in business for many years and has a variety of product procurement resources and partners.   We can provide one-stop service to customers around the world and help purchase all kinds of steel pipes, aluminum products, colored stone tiles and other required products.

Customer visits and orders

 

FAQ

1. Q: Are you a manufacturer?
A:Yes, we are manufacturers. We have our own factory and our own company. I believe we will be the
most suitable supplier for you.

2. Q: Can we visit your factory?
A: Sure, we welcome you to visit our factory , check our production lines and know more about our strength and quality.

3. Q: Do you have quality control system?
A: Yes, we have ISO, BV, MTC, certifications and our own quality control laboratory.Third party testing services are also available.

4. Q: Can you arrange the shipment for us?
A: Yes, we have designated sea freight and railway freight forwarders with decades of experiences and we get the best price with earlist vessel and professional service.

5. Q: How long is your delivery time?
A: Generally it is 7days if we have the exact goods in our stock. If not, it will take around 15-20 days to get goods ready for delivery.

6. Q: Can I get some samples?
A: We are glad to provide free samples to you, but we do not offer the freight.

7. Q: What is your after-sale service?
A: We provide after-sale service and offer 100% guarantee on our products.

8. Q: What is your MOQ?
A: 1Ton