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Textile scroll pipe

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Textile scroll pipe

We always adhere to the high quality and service, strive for excellence in raw materials, high precision and advanced equipment, and perfect technology.

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We always adhere to the high quality and service, strive for excellence in raw materials, high precision and advanced equipment, and perfect technology. We can provide all kinds of best quality products according to the different requirements.
specialized in manufacturing of Honed pipe, precision cold drawn teel pipe.

Product Name	Textile scroll pipe
Material	Carbon Steel and Alloy Steel
Surface	oiled, Polished, Brightness, Metallic color
Standard	ASTM A106 A53 A192 A179 A210 A519 DIN17175 1629 2391 EN10216-1 10216-2 10305-1 and GB,JIS
Grade	St35,St45,St52,E215,E235,E355,sch10,sch20, A106,A179,A192,A210,T11,T22,T12,AISI4130,SAE1010,SAE1020.etc
Technique	Cold drawn & cold rolled
Application	1. Automotive and mechanical pipes
	2. Petroleum cracking pipes
	3. High Pressure Boiler Pipe
	4. Low and middle pressure fluid transportation pipeline
	5. Chemical fertilizer equipment pipes
	6. Heat exchanger pipes
Delivery Conditions	1. BK (+C)	No heat treatment after last cold forming process.
	2. BKW (+LC)	After last heat treatment there is a light finishing pass (cold drawing)
	3. BKS (+SR)	After the final cold forming process the tubes are stress relieve annealed.
	4. GBK (+A)	After the final cold forming process the tubes are annealed in a controlled atmosphere.
	5. NBK (+N)	After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere.
Package	1. Bundle Packing.
	2. Plain end or vanished as per customer's request.
	3. Wrapped in waterproof paper.
	4. Sackcloth with several steel strips.
	5. Pack in heavy tri-wall boxes.

1. Chemical Composition

Steel grade	Chemical composition %
	C	Si	Mn	P	S		Cr	Ni		V	AI
				≤						≥
C20	0.17-0.24	0.17-0.37	0.15-0.65	0.035		0.025	0.250		0.250	/	/
CK45	0.42-0.5	0.17-0.37	0.5-0.8	0.025		0.025	0.250		0.300	/	/
Q355B	≤0.2	≤0.5	1.0-1.6	0.030		0.030	0.030		0.250	0.080	0.015
Q355D	≤0.2	≤0.5	1.0-1.6	0.030		0.025	0.250		0.250	0.150	/
E355(ST52)	≤0.22	≤0.55	≤1.6	0.025		0.025	0.250		0.250	/	/
SAE1026	0.22-0.28	0.15-0.35	0.6-0.9	0.040		0.050	/		/	/	/
4130	0.28-0.33	0.15-0.35	0.4-0.6	0.040		0.040	0.80-1.10		/	/	/
4140	0.36-0.43	0.15-0.35	0.705-1.0	0.040		0.040	0.80-1.10		/	/	/

2.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	Elongation A5%
C20	≥550	≥5	≥520	≥375	≥15
CK45	≥645	≥5	≥600	≥520	≥10
Q355B	≥640	≥5	≥600	≥520	≥14
Q355D	≥640	≥5	≥600	≥520	≥14
E355(ST52)	≥640	≥5	≥600	≥520	≥14
SAE1026	≥640	≥5	≥600	≥520	≥15

3.Tolerance:

Tolerance	I.D Tolerance			Tolerance of wall thickness
Size of I.D.	H8	H9	H10	Tolerance of wall thickness
30	0.033	0.052	0.084	<120mm(O.D) ±5% ≥120mm up to 210mm ±7.5% >210mm ±10%
>30-50	0.039	0.062	0.1
>50-80	0.046	0.074	0.12
>80-120	0.054	0.087	0.14
>120-180	0.063	0.1	0.16
>180-250	0.072	0.115	0.185
>250-315	0.081	0.13	0.21
>315-400	0.089	0.14	0.23

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