JIS G3454 Carbon steel pipes

JIS G3454 Carbon steel pipes

carbon steel pipe, JIS G3454, JIS G3454 STPG370, JIS G3454 STPG410, steel tube, steel tubes 

JIS G3454 standard specifies the carbon steel pipes, hereinafter referred to as the pipes.

Standard:

• JIS G3454 Carbon steel pipes for pressure service at an approximate maximum temperature of 350 Degrees Celsius.

Size range of JIS G3454 (mm):

• Outer Dimensions: 19.05mm- 114.3mm
• Wall Thickness:2.0mm -14 mm
• Length: max 16000mm

Application:

• Carbon steel pipes for pressure service
• High pressure service and high temperature service

Packing:

• Packing: in bundles
• Surface: Varnish coating
• Ends: Beveled or Plain ends with Plastic caps

Inspection & Certification:

• 1) Certification: ISO, API, ASTM, DIN etc.
• 2) Mill Test Certificate: EN10204/3.1B
• 3) Third party inspection: SGS, BV, Lloyds etc.

The main products of steel / steel grade:

• JIS G3454 STPG370
• JIS G3454 STPG410

Packing: Bare/bundles/crates/crate protection at the both sides of tubes or as per customers’ requirements .
Painting: as requested.

Chemical Compositions(%) of JIS G3454

Grade	C	Si	Mn	P	S
STPG370	≤0.25	≤0.35	0.30-0.90	≤0.040	≤0.040
STPG410	≤0.30	≤0.35	0.30-1.00	≤0.040	≤0.040

Mechanical Properties of JIS G3454

Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)
JIS G3454 STPG370	≥216	≥370	≥30
JIS G3454  STPG410	≥245	≥410	≥25

Pertaining to the electric-resisitance welded steel tubes, when previously agreed upon with the manufacturer, the purchaser may designate the supplementary quality requirements Z3 or Z4 speified in appendix, in addition to the items specified in this text.

JIS G3462 boiler tubes

JIS G3462 boiler tubes

boiler tube, boiler tubes, heat exchanger tubes, JIS G3462, JIS G3462 STB A12, JIS G3462 STB A13, JIS G3462 STB A24, Seamless pipe, Seamless Pipes, seamless steel tubes, Seamless tube, seamless tubes, steel tube

JIS G3462  is a JIS standard refers to alloy steel boiler tubes and heat exchanger tubes. This steel tubes is used in carbon steel pipes for tube heat-exchange inside and outside, such as boiler water steel pipe, superheater tube, condenser tube and more.
However, it is not applicable to the steel tubes for heating furnace and steel heat exchanger tubes for low temperature service.

The size range of  JIS G3462 boiler tubes(mm):

• Outer Dimensions: 19.05mm-168.3mm
• Wall Thickness:2.0mm-14 mm
• Length: max 19000mm

Application of JIS G346s seamless tubes:

• used for exchanging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superherater tubes, air preheater tubes, etc. of boilers, and heat exchanger industries.
• it is not applicable to the steel tubes for heating furnace and those for heat exchangers for low temperature service.

The main products of steel / steel grade:

• JIS G3462 STB A12
• JIS G3462 STB A13
• JIS G3462 STB A24

Corresponding to international standards

• ISO 9329-2:1997 Seamless steel tubes for pressure purposes-Technical delivery conditions-Part 2: Unalloyed and alloyed steels with specified elevated temperature properties.
• ISO 9330-2:1997 Welded steel tubes for pressure purposes-Technical delivery conditions-Part 2: Electric resistance and induction welded unalloyed and alloyed steel tubes with specified elevated temperature properties.

Delivery Condition:

• Heat treatment,Annealed, Normalized, Normalized and Tempered

Surface treatment:

• Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
• Painting as requested.

Chemical composition of JIS G3462 heat exchanger tubes(%):

Grade	C	Si	Mn	P	S	Cr	Mo
JIS G3462 STB A12	0.10~0.20	0.10~0.50	0.30~0.80	<0 td>	<0 td>	—	0.45~0.65
JIS G3462 STB A13	0.15~0.25	0.10~0.50	0.30~0.80	<0 td>	<0 td>	—	0.45~0.65
JIS G3462 STB A24	<0 td>	<0 td>	0.30~0.60	<0 td>	<0 td>	1.90~2.60	0.87~1.10

Mechanical behavior of JIS G3462 heat exchanger tubes (%):

Grade	tensile strength kgf/mm²{N/mm²}	yield strength kgf/mm²{N/mm²}
JIS G3462 STB A12	<39{382}	<21{206}
JIS G3462 STB A13	<42{412}	<21{206}
JIS G3462 STB A24	<42{412}	<21{206}

Tolerance on Outside Diameter in JIS G3462

O.D.	TOLERANCE ON OUTSIDE DIAMETER
	HOT ROLLED SEAMLESS PIPES	SEAMLESS PIPES THROUGH QUENCH AND NORMALIZED	COLD DRAWN SEAMLESS PIPES THRONG, THE HOT TREATMENT EXCEPT QUENCH AND NORMALIZED	ELECTRIC WELDED PIPES EXCEPT COLD DRAWN	COLD DRAWN ELECTRIC WELDED PIPES
MM
< td>	+0.4 -0.8	±0.25	±0.10	±0.15	±0.10
<25.40		±0.25	±0.15	±0.20	±0.15
<40-50		±0.25	±0.20	±0.25	±0.20
<50.60		±0.25	±0.25	±0.30	±0.25
<60-80		±0.30	±0.30	±0.40	±0.30
<80.100		±0.40	±0.40	-0.60,+0.40	±0.40
<100-120	+0.4 -1.2	-0.60,+0.40	-0.60,+0.40	-0.80,+0.40	-0.60,+0.40
<120-160		-0.80,+0.40	-0.80,+0.40	-1.00,+0.40	-0.80,+0.40
<160-200	-1.8,+0.4	-1.20,+0.40	-1.20,+0.40	-1.20,+0.40	-1.20,+0.40
<200	-2.4,+0.4	-1.60,+0.40	-1.60,+0.40	-1.60,+0.40	-1.60,+0.40

Tolerance on Wall Thickness in JIS G3462

WALL THICKNESS (MM)	HOT ROLLED SEAMLESS PIPE		COLD DRAWN SEAMLESS PIPE		ELECTRIC WELDED PIPE
	O.D（MM）		O.D（MM）		O.D（MM）
	< td>	<100	< td>	<40	< td>	<40
	(%)
< td>	-	-	-0,+0.4mm	+22 -0	-0,+0.3mm	+18 0
<2-2.4	-0,+40	-	+20 -,0		+18 -0
<2.4-3.8	-0,+35	-0,+35
<3.8-4.6	-0,+23	-0,+33
<4.6	-0,+28	-0,+28

Tolerance on the Length in JIS G3462

ITEM		TOLERANCE AN LENGTH
OD<50mm td>	<7m td>	-0, +7mm
	<=7m	Every 3m increase in length, the plus tolerance be increased by 3mm with a maximum of 15mm
OD<=50mm	<7m td>	-0, +10mm
	<=7m	Every 3m increase in length, the plus tolerance be increased by 3mm with a maximum of 15mm
OD: Outside Diameter

JIS G3441 Alloy Steel Tubes for General Structural Purpose

JIS G3441 Alloy Steel Tubes for General Structural Purpose

JIS G3441, JIS G3441 SCM415TK, JIS G3441 SCM418TK, JIS G3441 SCM420TK, JIS G3441 SCM430TK, JIS G3441 SCM435TK, JIS G3441 SCM440TK, JIS G3441 SCr420TK, steel tube, steel tubes 

JIS G3441 alloy steel tubes are widely used in mechanical structure, natural gas, oil, water transportation, chemical fertilizer equipment with boiler ect.

Application of  JIS G3441 alloy steel tubes:

mechanical structure, natural gas, oil, water transportation, chemical fertilizer equipment with boiler, petroleum cracking, geological drilling, oil drilling, etc.

Quality Standard and Steel Grade:

• JIS G3441 SCr420TK
• JIS G3441 SCM415TK
• JIS G3441 SCM418TK
• JIS G3441 SCM420TK
• JIS G3441 SCM430TK
• JIS G3441 SCM435TK
• JIS G3441 SCM440TK

Size range of JIS G3441 Alloy Steel Tubes:

Tolerance on Outside Diameter in JIS G3441

O.D.(mm)	Tolerance(%)
<13 td>	±0.25
<13-25	±0.40
<25-40	±0.60
<40-65	±0.80
<65-90	±1.00
<90-140	±1.20
<140	By agreement

Tolerance on Wall Thickness in JIS G3441

W.T.(mm)	Tolerance
< td>	-0.5,+0.6
<4	-12.5%, +15%

How to test JIS G3441 Alloy Steel Tubes:

• Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation)
• Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc)
• Exterior Size Inspection.
• Mill Test Certificate:EN 10204/3.1B
• Delivery Condition:BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)

JIS G3441 Alloy Steel Tubes Chemical composition Limits(%)

Steel grade	Steel grade(old)	C	Si	Mn	P	S	Cr	Mo
SCr420TK	–	0.18~0.23	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM415TK	–	0.13~0.18	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM418TK	–	0.16~0.21	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM420TK	–	0.18~0.23	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM430TK	As STKS1	0.33~0.38	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM435TK	As STKS3	0.33~0.38	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30
SCM440TK	–	0.38~0.43	0.15~0.35	0.60~0.85	<0 td>	<0 td>	0.90~1.20	0.15~0.30

 Packing:

• Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips
• Two tags on each bundle
• Wrapped in waterproof paper
• PVC sleeve, and sackcloth with several steel strips

JIS G3461 Carbon Steel Boiler and Heat Exchanger Tubes

JIS Carbon Steel Boiler and Heat Exchanger Tubes

JIS G3461 is a JIS standard refers to boiler tubes,heat exchanger tubes, condenser tubes etc. This steel pipe is used in carbon steel pipes for tube heat-exchange inside and outside, such as boiler water steel pipe, superheater tube, condenser tube and more.

However, it is not applicable to the steel tubes for heating furnace and steel heat exchanger tubes for low temperature service.

The size range of  JIS G3461 boiler tube(mm):

• Outer Dimensions: 19.05mm-168.3mm
• Wall Thickness:2.0mm- 14 mm
• Length: max 19000mm

Application of JIS G3461 seamless tubes:

• used for exchanging heat on the inside and outside of the tube, such as water tubes, smoke tubes, superherater tubes, air preheater tubes, etc. of boilers, and heat exchanger industries.
• it is not applicable to the steel tubes for heating furnace and those for heat exchangers for low temperature service.

The main products of steel / steel grade:

• JIS G3461 STB340
• JIS G3461 STB410
• JIS G3461 STB510

JIS G3461 tube Chemical Compositions(%)

Grade	C	Si	Mn	P	S	Cr	Mo
G3461 STB340	≤0.18	≤0.35	0.30-0.60	≤0.035	≤0.035	/	/
G3461 STB410	≤0.32	≤0.35	0.30-0.80	≤0.035	≤0.035	/	/
G3461 STB510	≤0.25	≤0.35	1.00-1.50	≤0.035	≤0.035	/	/

JIS G3461 tube Mechanical Properties

Grade	Yield Strength (Mpa)	Tensile Strength (Mpa)	Elongation (%)
G3461 STB340	≥175	≥340	≥35
G3461 STB410	≥255	≥410	≥25
G3461 STB510	≥295	≥510	≥25

Corresponding to international standards

• ISO 9329-2:1997 Seamless steel tubes for pressure purposes−Technical delivery conditions−Part 2: Unalloyed and alloyed steels with specified elevated temperature properties.
• ISO 9330-2:1997 Welded steel tubes for pressure purposes−Technical delivery conditions−Part 2: Electric resistance and induction welded unalloyed and alloyed steel tubes with specified elevated temperature properties.

Delivery Condition:

• Heat treatment,Annealed, Normalized, Normalized and Tempered

Surface treatment:

• Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
• Painting as requested.

boiler tube, boiler tubes, G3461 STB510, heat exchanger tubes, JIS G3461 STB340, JIS G3461 STB410, Seamless tube, seamless tubes, steel tube

EN 10297 Mechanical seamless Tubes

EN 10297 Seamless circular steel tubes for mechanical and general engineering purposes. Technical delivery conditions. Non-alloy and alloy steel tubes.
Standard: BS EN 10297-1:2003

Applications of  EN10297:

Alloy and non-alloy steel pipes, with circular section for mechanical and engineering applications.

Process: Seamless

Tolerance and size range :

Outside diameter:
D<=219.1mm: +/-1%(Min+/-0.5mm)
D>219.1mm:+/-1%

Thickness:
D<=219.1mm:+/-12.5%(min +/-0.4mm)
D>219.1mm: itchanges according to the ratio thickness/ diameter

Tolerance on thickness related to t/CD:

<=0.025	0.025<T<=0.050	>0.050
+/- 20%	+/-15%	+/-12.5%

Size range: According to DIN_EN_10220-2003 unless differently spcified by the customer

Straightness

D<33.7mm :not specified
D>=33.7mm :0.15% on the total length

Note:

D: Outside diameter
T: Nominal thickness (mm)

Out of proundness

Included in the outside diameter tolerance

Standard and Steel grade:

• EN 10297 E235
• EN 10297 E355
• EN 10297 C35E
• 20MnV6

Certification: UNI EN10204.3.1

Chemical analysis [%] of  EN 10297:

Steel grade	C	Si	Mn	P	S
E235	≤0,17	≤0,35	≤1,20	≤0,040	≤0,045
E355	≤0,22	≤0,55	≤1,60	≤0,040	≤0,045
C35E	0,32 – 0,39	≤0,40	0,50 – 0,80	≤0,035	≤0,035
20MnV6	0,16 – 0,22	0,10 – 0,50	1,30 – 1,70	≤0,035	≤0,040

Mechanical properties of EN 10297:

Steel grade	Supply condtion	ReH min [MPa]		Rm min [MPa]		A [%]
		T≤16	16<T≤25	T≤16	16<T≤25
E235	AR	235	225	360	360	25
E355	AR	355	345	490	490	20
C35E	N	300	280	520	500	17
20MnV6	AR	470	450	650	620	17

Condition on delivery:

Term	Symbol	Explanation
Cold-finished/hard (cold-finished as-drawn)	BK	No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft (lightly cold-worked)	BKW	After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed	GBK	After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized	NBK	The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.