IK-CHINA LIMITED Special manufacturer of boiler tubes, heat exchanger tubes, L, LL, KLM finned tubes, high frequency welded helical (spiral) finned tubes, serrated finned tubes, hot dipped galvanized oval (elliptical) finned tubes, rectangular finned tubes, condenser fin flat tubes, extruded finned tubes, G embedded finned tubes, laser welded finned tubes, Oval finned tubes, aluminum plates, aluminum welding rods, seamless finned tubes with two longitudinal opposite fins, studded pipes, double H finned tubes, casting alloy tubes HK40 (reformer tubes), inner finned tubes, longitudinal finned tubes, air cooled heat exchanger, economizers, elbows, welded pipes

IK-CHINA LIMITED

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Boiler tubes

Heat exchanger tubes

Welded pipes

L, LL, KLM finned tubes (fin tubes)

high frequency welded (serrated) finned tubes (fin tubes)

(serrated) extruded finned tubes

hot dipped galvanized oval (elliptical) finned tubes, rectangular fin tubes

condenser fin flat tubes

H / double H finned tubes (fin tubes)

Studded Pipes

Laser welded finned tubes (fin tubes)

G embedded finned tubes (fin tubes)

inner finned tubes (fin tubes)

longitudinal finned tubes (fin tubes)

seamless finned tubes with two longitudinal opposite fins

casting alloy tubes

Tube finning machine

Aluminum plates, strips,foils

Aluminum welding wire rod

Aluminum tubes, profile

Economizer for Boiler

air-cooled heat exchanger (air cooler)

material

standard & specification

ASTM A334 alloy steel tubes for heat exchanger & boilers

ASTM A334 Standards specifications download

ASTM A 334 Low Temperature Tubes / Alloy Steel for Heat exchanger and Boilers
Chemical composition and mechanical properties
Manufacturing Process: Seamless or Welded Chemical Analysis

Grade	C max	Mn	P max	S max	Si	Ni	min YS KSI [MPA]	min TS KSI [MPA]	El (%)
1	0.30	0.40-1.06	0.025	0.025			30 [205]	55 [380]	35
3	0.19	0.31-0.64	0.025	0.025	0.18-0.37	3.18-3.82	35 [240]	65 [450]	30
6	0.30	0.29-1.06	0.025	0.025	0.10 min		35 [240]	60 [415]	30
7	0.19	0.90 max	0.025	0.025	0.13-0.32	2.03-2.57	35 [240]	65 [450]	30
8	0.13	0.90 max	0.025	0.025	0.13-0.32	8.40-9.60	75 [520]	100 [690]	22
91	0.20	0.40-1.06	0.025	0.025		1.60-2.24	46 [315]	63 [435]	28
112	0.10	0.60 max	0.025	0.025	0.35 max	35.0-37.0	35 [240]	65 [450]	18

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