GB/T 3639-2018 Precision Seamless Carbon Steel Pipe

• After-sales Service: 5 Warranty
• Warranty: 10 Warranty
• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Oiled
• Model NO.: Precision Tubes
• 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
• Length: 12m, 6m, or Customized
• Thickness: 1.5 - 75 mm or Customized
• Grade: Q235 45# St52 20cr
• Application: Fluid Pipe, Boiler Pipe, Drill Pipe
• Processing Service: Welding, Punching, Cutting, Bending, Decoiling
• Surface: Bright Pipe, Oil or Non-Oil
• Shape: Round.Square.Rectangle
• Alloy or Not: Non-Alloy
• Tolerance: +/-0..1mm
• Delivery Time: 8-14 Days
• Transport Package: Standard Airworthy Packaging
• Specification: customized
• Trademark: Shandong Hanbang
• Origin: China
• HS Code: 7304319000
• Production Capacity: 50000ton/Year

Product Description

Product Description

Wall Thickness	1.5mm-100mm
Length	3m-12m
Outer diameter	22mm-650mm
Tolerance	±0.1MM
Shape	Round, Square, Rectangle, Oval, Deformed
Material	Q195-Q345, 10# ,20#,45#,195-Q345, Gr.B-Gr.50, S235JR, SS400, SPHC,BS-040A10 ,16mn, 40cr, 42crmo, 27simn, 12cr1mov, 15crmo, Gcr15, 25mn2
Technique	Cold rolled, Cold drawing
Standard	ASTM, DIN, JIS, BS
Surface treatment	Bright tube,Oiled or Non-Oiled
Delivery times	Delivered within 7-15 days after receipt of deposit
Package	1. Packed with 8 bundles tightened with metal belt and plastic wrapped if need 2. According to customer's requirement
Application	Widely used in furniture,interior decoration, fluid pipeline, petroleum and natural gas industry, drilling, pipeline, structure

 

  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	\

Grade	Delivery status
	Cold Work/Hard (Y)		Cold Work/Soft (R)		Stress Relief annealing (T)
	Tensile strength (MPa)	Elongation (%)	Tensile strength (MPa)	Elongation (%)	Tensile strength (MPa)	Elongation (%)
	≥
10#	412	6	373	10	333	12
20#	510	5	451	8	432	10
35#	588	4	549	6	520	8
45#	647	4	628	5	608	7

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

 

 

 

Company Profile

Our company is a collection of R & D, production, management as one of the group company, the company and subsidiaries mainly produce carbon steel series, stainless steel series, galvanized series, aluminum series and PPGI, PPGL series and other products of modern enterprises. The company covers an area of 36,000 square meters and employs more than 500 people. The leading products are seamless steel pipe, carbon steel bar, color coated plate and aluminum foil, which are famous brand products in Shandong Province. Hanbang Brand is a well-known brand in China. The company won the seventh Mayor Quality Award. It is the single champion enterprise in Shandong Province, the quality benchmark enterprise in Shandong Province, the national contract-abiding and credit-keeping enterprise, and the national "Architectural Decoration color Steel Plate" and other 16 national, industrial and group standards. Prepare the units. Products are exported to Russia, Canada, Australia, Africa, South America, Southeast Asia and other more than 40 countries and regions.

Certifications

Production

The mechanical engineering workshops of our factory are all equipped with numerical central control ,Our factory has been constantly improving the platform construction, improving the quality of technical team,strengthening the invention of products category, formed complete R & D system and production quality management system, wined high reputation in the iron and steel industry.

Packaging & Shipping

  
     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.

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: 2 Ton