Wholesale Cheapest Price Precision Thick Walled ERW Weld Q235 Metal Round Square Seamless Carbon Steel Pipe for Structure

• Customization: Available
• After-sales Service: 5 Year
• Warranty: 5 Years
• Model NO.: Precision seamless pipe/tube
• Technique: Cold Rolled/Cold Drawn
• Material: Carbon Steel
• Surface Treatment: Bright Tube
• 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: 1-20 mm or Customized
• Application: Automotive Industry, Hydraulic System, Other Indus
• Standard: DIN 2391, En10305-1, En10305-4, BS 6323, ISO 8535
• Steel Grade: Q195/Q235/Q345/10#/20#/35#/45#/ 20cr/40cr/ 20crmo/
• Surface: Polishing, Annealing, Pickling
• MOQ: 1 Ton
• Outer Diameter: 10mm-250mm
• Delivery Time: 7-10 Days
• Stock: in Stock
• Payment: 30%Tt+70% Balance Payment
• Price Term: CIF CFR Fob Ex-Work
• Edges: Mill Edge, Slit Edge
• Tolerance: 1%
• Shape: Round
• Transport Package: Standard Sea Shipping Pacakge
• Specification: OD: 15-260mm
• Trademark: Shandong Chuangxian
• Origin: China Shandong
• HS Code: 730431900
• Production Capacity: 10000 Tons/ Month

Product Description

Product Description

 

Product Name	Precision  Steel Pipe
Technique	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.

Conventional mechanical properties of precision pipe

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

Designation	Symbol	Description
Cold finished (hard)	BK	Tubes do not undergo heat treatment following the final cold forming and,thus, have a rather high resistance to deformation
Cold finished (soft)	BKW	The final heat treatment is followed by cold drawing involving limited deformation.Appropriate further processing allows a certain degree of cold forming(e.g. bending expanding).
Cold finished and stress-relleved	BKS	Heat treatment is applled following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree
Annealed	GBK	The last cold forming process is followed by annealing in a controlled atmosphere
Normalized	NBK	The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere

Detailed Photos

 

Thickness±10%   (smallest±0.12mm)
		0.5	-0.8	1	-1.2	1.5	-1.8	2
outer diameter		Inner diameter (nominal value and allowable deviation)
Size	Allowable deviation
4	±0.10	3±0.30	2.4±0.30	2±0.30
6		5±0.25	4.4±0.25	4±0.25	3.6±0.30
8		7±0.20	6.4±0.20	6±0.20	5.6±0.30	5±0.30	4.4±0.35	4±0.35
10		9±0.15	8.4±0.15	8±0.20	7.6±0.25	7±0.25	6.4±0.30	6±0.30
12		11±0.15	l0.4±0.15	10±0.15	9.6±0,20	9±0.20	8.4±0.25	8±0.25
14		13±0.10	12.4±0.10	12±0.10	11.6±0.15	11±0.15	10.4±0.20	10±0.20
16		15±0.10	14.4±0.10	14±0.10	13.6±0.10	13±0.10	12.4±0.15	12±0.15
25		24±0.10	23.4±0.10	23±0.10	22.6±0.10	22±0.10	21.4±0.10	21±0.10
-26		25±0.10	24.4±0.10	24±0.10	23.6±0.10	23±0.10	22.4±0.10	22±0.10
28		27±0.10	26.4±0.10	26±0.10	25.6±0.10	25±0.10	24.4±0.10	24±0.10
30		29±0.10	28.4±0.10	28±0.10	27.6±0.10	27±0.10	26.4±0.10	26±0.10
35		34±0.15	33.4±0.15	33±0.15	32.6±0.15	32±0.15	31.4±0.15	3l±0.15
38		37±0.15	36.4±0.15	36±0.15	35.6±0.15	35±0.15	34.4±0.15	34±0.15
40		39±0.15	38.4±0.15	38±0.15	37.6±0.15	37±0.15	36.4±0.15	36±0.15
45				43±0.20	42.6±0.20	42±0.20	41.4±0.20	41±0.20
50				48±0.20	47.6±0.20	47±0.20	46.4±0.20	46±0.20
55	±0.25			53±0.25	52.6±0.25	52±0.25	51.4±0.25	5l±0.25
60				58±0.25	57.6±0.25	57±0.25	56.4±0.25	56±0.25
70				68±0.30	67.6±0.30	67±0.30	66.4±0.30	66±0.30
76	±0.35			74±0.35	73.6±0.35	73±0.35	72.4±0.35	72±0.35
80				78±0.35	77.6±0.35	77±0.35	76.4±0.35	76±0.35
90	±0.40					87±0.40	86.4±0.40	86±0.40
100	±0.45						96.4±0.45	96±0.45
110	±0.50							106±0.50
120								116±0.50
150	±0.75
180	±0.90
200	±1.0

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.

 

Company Profile

Shandong Chuangxian New Materials Co., Ltd. is an import and export group company integrating production and sales. The company and its subsidiaries are equipped with a number of international advanced production lines. More than 10 years of experience in the steel industry. At the same time, the company's annual reserve of more than 100, 000 tons, to ensure short-term delivery.
Chuangxian brand is a Shandong trademark. The company and the group produce seamless steel pipe, cast iron pipe, steel bar, I steel, galvanized coil, corrugated board, stainless steel plate and other products. Production, inspection, service and management system with ISO9001: 2008 and ISO14001: 2004 dual certification guarantees. It is not only popular in the domestic market, but also exported to overseas markets. Products are exported to North America, South America, Africa, Southeast Asia, Europe, Oceania and other parts of the world.
We sincerely welcome customers at home and abroad to visit us, seek common development and create brilliant future together !

  
 

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