Welded Coil & Straight Tube

Product Features

Welded tubes to precise specifications through the Welding - Cold drawing -BA heat treatment process. These procedures dramatically overcome weakness of weld beads and makes it possible to produce precision tubes for a variety of demanding applications.

● Corrosion Resistant Material Selection

Alloy	PREN	Density		Application Alloy
		g/㎤	lb/㎤
304	21	7.93	0.29	General good corrosion resistance grade
304L	21	7.93	0.29	Lower carbon than 304 impedes carbide precipitates in heat affected zone giving good weld ability. Reduced carbides also lowers susceptibility to intergranular corrosion
316	24	7.98	0.29	Alloyed with molybdenum which improves corrosion resistance in marine environments, chlorides, and biofouling. Excellent pitting corrosion resistance.
316L	24	7.98	0.29	Carbon content restricted, which impedes carbide precipitates in heat affected zone giving good weld ability. Reduced carbides also lowers susceptibility to intergranular corrosion

● Chemical composition & Mechanical Property of Stainless Steel

Code	Standard	Chemical
		Steel Grade	C(max)	Si(max)	Mn(max)	P(max)	S(max)	Ni(max)	Cr(max)	Mo(max)
304	ASTM	TP 304	0.080	1.0	2.00	0.045	0.030	8.00-11.00	18.00-20.00
	JIS	SUS 304	0.080	1.00	2.00	0.040	0.030	8.00-11.00	18.00-20.00
	DIN	1.4301	0.070	1.00	2.00	0.045	0.030	8.50-10.05	18.00-20.00
	AISI	304	0.080	1.00	2.00	0.045	0.030	8.00-10.50	17.00-20.00
304L	ASTM	TP 304L	0.035	1.0	2.00	0.045	0.030	8.00-12.00	18.00-20.00
	JIS	SUS 304L	0.030	1.00	2.00	0.040	0.030	9.00-13.00	18.00-20.00
	DIN	1.4306	0.030	1.00	2.00	0.045	0.030	10.00-12.50	18.00-20.00
	AISI	304L	0.030	1.00	2.00	0.045	0.030	10.00~12.50	18.00~20.00
316	ASTM	TP 316	0.08	1.0	2.00	0.045	0.030	11.00-14.00	16.00-18.00	2.00-3.00
	JIS	SUS 316	0.08	1.00	2.00	0.040	0.030	10.00-14.00	16.00-18.00	2.00-3.00
	DIN	1.4401	0.070	1.00	2.00	0.045	0.030	10.50~13.50	16.50~18.50	2.00-2.50
	AISI	316	0.08	1.00	2.00	0.045	0.030	10.00-14.00	16.00-18.00	2.00-3.00
316L	ASTM	TP 316L	0.035	1.0	2.00	0.045	0.030	10.00-15.00	16.0-18.0	2.00-3.00
	JIS	SUS 316L	0.030	1.00	2.00	0.040	0.030	12.00~16.00	16.00-18.00	2.00-3.00
	DIN	1.4404	0.030	1.00	2.00	0.045	0.030	11.00-14.00	16.50-18.50	2.00-2.50
	AISI	316L	0.030	1.00	2.00	0.045	0.030	10.00-14.00	16.00-18.00	2.00-3.00

● Mechanical Properties

Grade	UNS	Yield Strength (N/mm²)	Tensile Strength (N/mm²)	Elongation (%)	Rockwell Hardness (Scale)
TP 304	S30400	min 205	min 515	min 35	Max. 90
TP 304L	S30403	min 175	min 485	min 35	Max. 90
TP 316	S31600	min 205	min 485	min 35	Max. 90
TP 316L	S31603	min 175	min 485	min 35	Max. 90

Product Application

- Oil, Gas, Petrochemical, Desalination, Fertilizer & Chemical Industries
- Control & Instrumentation Industry (C&I)
- Process & Power Plants
- Valve Remote Control (VRC) Line System
- Deck Machinery Remote Control Line System
- Fixed Gas Detection Sensing Line
- Heat Tracing Line
- Pressure Sensing Line
- Sampling & Drain Line
- Tank Level & Draft Gauging System Line
- Fire Fighting System Control Line

Product Specification

● Standard

<ASTM A269 A213>

Grade	ASTM (UNS)	Standard	O.D In.(mm)	W.T(%)
304 / 304L	S30400 / S30403	ASTM A269, ASTM A213	±0.005 [0.13]	±10%
316 / 316L	S31600 / S31603	ASTM A269, ASTM A213	±0.005 [0.13]	±10%

Welded Coil Tube

● Weight and length Per Coil

Imperial Size				Metric Size
O.D(in)	W.T(in)	L(ft)	Weight(lb)	O.D(mm)	W.T(mm)	L(m)	Weight(kg)
1/4	0.035	2,693	220~260	6.35	0.90	821	100~120
	0.049	2,065			1.25	630
3/8	0.035	1,702		9.53	0.90	519
	0.049	1,273			1.25	388
1/2	0.035	1,245		12.70	0.90	379
	0.049	921			1.25	281
3/4	0.049	593		19.05	1.25	181
	0.065	456			1.65	139
1	0.049	437		25.40	1.25	133
	0.065	334			1.65	102

Welded Straight Tube

● Technical Data

PRODUCT	GRADE	AVAILABLE SIZE			REMARK
		DIAMETER	THICKNESS	LENGTH
STRAIGHT TUBES	AUSTENITE ( 304, 304L, 316, 316L )	6 to 25.4mm (1/4” ~1” )	0.8 to 2.11mm	4m,6m	Coiled tubes Upon request