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5 - 420mm Diameter Alloy steel U Bend Tube JIS G 3462 TBA 12 / STBA 13 / STBA 20

Large Image : 5 - 420mm Diameter Alloy steel U Bend Tube JIS G 3462 TBA 12 / STBA 13 / STBA 20

Product Details:

Place of Origin:	China
Brand Name:	TORICH
Certification:	ISO 9001 ISO14001 TS 16949 ABS
Model Number:	JIS G3462

Payment & Shipping Terms:

Minimum Order Quantity:	5 tons
Price:	Negotiation
Packaging Details:	oil protection in hexagonal bundles
Delivery Time:	5-8weeks
Supply Ability:	60000 tons per year

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Detailed Product Description

Material:	Alloy Steel	Steel Grade:	STBA 12 STBA 13 STBA 20 STBA 22 STBA23 STBA 24 STBA 25 STBA 26 Etc
Produce Method:	Electric Resistant Welding And Seamless	Heat Treatment:	Annealing, Isothermal Annealing, Full Annealing Etc
Standard:	JIS G3462	Application:	For Boiler And Heat Exchanger
Relevant Standard:	KS D 3572 ASTM A 161 A209 A213 A199 DIN 17175 BS 3059

JIS G 3462 STBA 12 STBA 13 STBA 20 STBA 22 STBA23 STBA 24 STBA 25 STBA 26 Alloy steel boiler and heat exchanger

JIS G 3462 Alloy steel boiler and heat exchanger

Standard:JIS G 3462

Wall thickness 0.5-50mm Diameter 5-420mmLength Upon request

Application: for boiler and heat exchanger

Produce method:

STBA 12,STBA13,STBA20,,STBA 22 :electric resistant welding

STBA 25 STBA 26 :Seamless

Heat treatment:

STBA 12,STBA13:Low temperature annealing,

isothermal annealing, full annealing,

normalizing followed by tempering.

STBA 20 STBA22: Low temperature annealing,

isothermal annealing, full annealing,

normalizing followed by tempering.

STBA 23 STBA 24 STBA 25 STBA 26:Isothermal annealing,

full annealing followed by tempering.

CHEMICAL COMPOSITION % max
Steel Grade	C	Si	Mn	P	S	Cr	Mo
STBA 12	0.10-0.20	0.10-0.50	0.30-0.80	0.035	0.035	-	0.45-0.65
STBA 13	0.15-0.25	0.10-0.50	0.30-0.80	0.035	0.035	-	0.45-0.65
STBA 20	0.10-0.20	0.10-0.50	0.30-0.60	0.035	0.035	0.50-0.80	0.45-0.65
STBA 22	0.15	0.5	0.30-0.60	0.035	0.035	0.80-1.25	0.45-0.65
STBA 23	0.15	0.50-1.00	0.30-0.60	0.035	0.030	1.00-1.50	0.45-0.65
STBA 24	0.15	0.5	0.30-0.60	0.035	0.030	1.90-2.60	0.87-1.13
STBA 25	0.15	0.5	0.30-0.60	0.035	0.030	4.00-6.00	0.45-0.65
STBA 26	0.15	0.25-1.00	0.30-0.60	0.035	0.030	8.00-10.00	0.9-1.10

MECHANICAL PROPERTIES min
Steel grade	Tensile strength Mpa	Yeild point or proof stress Mpa	Elongation %
Steel grade	Tensile strength Mpa	Yeild point or proof stress Mpa	OD 20mm and over	OD 10mm or over to and excl. 20mm	OD up to 10mm
STBA 12	380	205	30	25	22
STBA 13	410	205	30	25	22
STBA 20	410	205	30	25	22
STBA 22	410	205	30	25	22
STBA 23	410	205	30	25	22
STBA 24	410	205	30	25	22
STBA 25	410	205	30	25	22
STBA 26	410	205	30	25	22

Hardness
Steel grade	Rockwell hardness HRB (Mean value of three points)
STBA 12	80max
STBA 13	81max
STBA 20	85max
STBA 22	85max
STBA 23	85max
STBA 24	85max
STBA 25	85max
STBA 26	89max