The Importance of ASTM Q235B A36 Schedule 40 Construction 14 20 24 30 Inch Black Round Tube

ASTM Q235B A36 Schedule 40 Construction 14 20 24 30 Inch Black Round Tube is a type of Seamless Carbon steel Pipe that is widely used in construction projects. This article aims to highlight the importance of this specific type of pipe in construction and explain why it is a reasonable choice for various applications.

Item No	Product name	Standard	Steel grade		Size(mm)	Application
1	pressure fluid steel pipe	ASTM A106	Gr.A、Gr.B、Gr.C		OD：21.3-1220	boiler,heat exchanger,medium low pipeline
		ASTM A53			Wall:2.0-100
2	casing, Oil pipe,coupling	API5CT PSL1、	group1: J55、 K55、 N80、 R95		OD：26.7-762	Steel tube for oil field
		PSL2 PSL3	group2: L80、 C90、 T95		Wall:2.87-40
			group3: P110
3	pipeline transportation system	API5L	A、B、X42、X46、X52、X60、X65、X70、X80		OD：26.7-1220	oil and gas pipeline, refining equipment pipeline
		PSL1			Wall:2.87-100
		PSL2
4	mechanical high precision seamless pipe	ASTM A519	SAE1018、SAE1020、SAE1045、SAE1518、SAE1541、SAE4130、SAE4135、SAE4140、SAE8620、ST78、ST52、E215、E235、E355、E410、C35E、C45E、25CrMo4、42CrMo4		OD：21.3-406	high precision machined seamless tube,construction machine,automobile engine
		EN10305-1			Wall:2.0-40
		DIN2391
		GB3639
5	heat exchanger and condenser low carbon cold drawn seamless pipe	ASTM A179	A179		OD：6-76.2	heat exchanger
					Wall:1.0-20
6	high pressure carbon steel seamless boiler pipe	ASTM A192	A192		OD：12.7-177.8	high pressure boiler tube
					Wall:2.0-25.4
7	boder,superheater unit medium carbon Seamless steel pipe	ASTM A210	A210A-1		OD：12.7-127	high pressure toiler and heat exchanger
			A210-C		Wall:0.9-12.7
8	boiler,superheater unit femilic Alloy steel pipe	ASTM A213	T2、T11、T12、T22、T5、T5b、T5C		OD：6-127	high pressure boiler,superheater unit, heat exchanger alloy steel tube
					Wall:0.4-12
9	seamless steel pipe for pressure purpose	EN10216-1	195GH、P235GH、P265GH、20MnNb6、16Mo3、13CrMo4-5	OD：21.3-762		pressure piping
		EN10216-2		Wall:2.0-40
10	gas cylinder seamless steel pipe	GB18248	37Mn、34Mn2V、30CrMo、35CrMo、34CrMo4、30CrMnSiA、STH11、STH12、STH21、STH22、STH31	OD：76-356		high pressure gas cylinder
		JIS G3429		Wall:2.5-6.0
11	the automotive axle pipe	YB/T 5035	45#、45Mn2、40MnB、40Cr	OD：76-121		automobile application
				Wall:7.0-28.5

One of the key reasons why ASTM Q235B A36 Schedule 40 Construction 14 20 24 30 Inch Black Round Tube is highly valued in construction is its durability. This pipe is made from high-quality carbon steel, which gives it excellent strength and resistance to wear and tear. It can withstand heavy loads and extreme weather conditions, making it suitable for a wide range of construction projects.

Another important aspect of this pipe is its seamless design. Unlike pipes with welded joints, seamless pipes do not have any weak points that could potentially lead to leaks or failures. This makes ASTM Q235B A36 Schedule 40 Construction 14 20 24 30 Inch Black Round Tube a reliable choice for applications where a secure and leak-free connection is crucial, such as plumbing systems or structural supports. casing pipe,casing well pipe, casing supreme pipe, casing vs carrier pipe, casing for ac pipe, casing steel pipe, casing pipe size, casing pvc pipe price, casing pipe, casing pipe suppliers in China, casing capping pipe, casing drill pipe,carrier pipe,casing pipe size,bushing Flange,bushing sleeve,bushing,bushing arm,bushing bearing,bushing Reducer,bushing tool,bushing pvc,bushing meaning The schedule 40 designation of this pipe refers to its Wall thickness. Schedule 40 pipes have a thicker wall compared to schedule 20 or 24 pipes, which makes them more suitable for applications that require higher pressure or load-bearing capabilities. This added strength and stability make ASTM Q235B A36 Schedule 40 Construction 14 20 24 30 Inch

Tensile and Hardness Requirements
Grade			Yield strength MPa		Tensile Strength	Hardness a,c		Specified Wall Thickness	Allowable Hardness Variation b
	Type	Total Elongation Under Load			min MPa	max
			min	max		HRC	HBW	mm	HRC
1	2	3	4	5	6	7	8	9	10
H40	—	0.5	276	552	414	—	—	—	—
J55	—	0.5	379	552	517	—	—	—	—
K55	—	0.5	379	552	655	—	—	—	—
N80	1	0.5	552	758	689	—	—	—	—
N80	Q	0.5	552	758	689	—	—	—	—
R95	—	0.5	655	758	724	—	—	—	—
L80 L80	1	0.5	552	655	655	23	241	—	—
L80	9Cr 13Cr	0.5	552	655	655	23	241	—	—
		0.5	552	655	655	23	241	—	—
C90	1	0.5	621	724	689	25.4	255	£12.70	3
								12.71 to 19.04	4
								19.05 to 25.39	5
								³ 25.40	6
T95	1	0.5	655	758	724	25.4	255	£12.70	3
								12.71 to 19.04	4
								19.05 to 25.39	5
								³ 25.40	6
C110	—	0.7	758	828	793	30	286	£12.70	3
								12.71 to 19.04	4
								19.05 to 25.39	5
								³ 25.40	6
P110	—	0.6	758	965	862	—	—	—	—
Q125	1	0.65	862	1034	931	b	—	£12.70	3
								12.71 to 19.04 19.05	4
									5
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method.
b No hardness limits are specified, but the maximum variation is restricted as a manufacturing control in accordance with 7.8 and 7.9.
c For through-wall hardness tests of Grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.