Carbon Steel Pipe Cap
Carbon Steel Pipe Cap
Carbon Steel Pipe Cap

Carbon Steel Pipe Cap

The head refers to the component used to close the end of the container to isolate the internal and external media, also known as the end cap. The heads of cylindrical containers are generally rotating shells.

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Product Introduction

The head is a component of the container, which is connected to the cylinder by welding. According to different geometric shapes, they can be divided into spherical, elliptical, dish-shaped, spherical cap-shaped, conical shell and flat covers. Among them, spherical, elliptical, dish-shaped and spherical cap-shaped heads are also collectively referred to as convex heads. . In terms of welding, it is divided into butt welding head and socket welding head. Used in various container equipment, such as storage tanks, heat exchangers, towers, reactors, boilers and separation equipment, etc. Materials include carbon steel (A3, 20#, Q235, Q345B, 16Mn, etc.), stainless steel (304, 321, 304L, 316, 316L, etc.), alloy steel (15Mo3 15CrMoV 35CrMoV 45CrMo), aluminum, titanium, copper, nickel and nickel Alloys etc.

Material: Carbon Steel ASME / ASTM SA / A234 WPB, DIN 1.0405
Dimension: ANSI B16.9, ANSI B16.28, JIS B2312, JIS B2313
Thickness: Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc.
Pipe Cap Size: 1/2″~48″

Chemical Composition (%) of ASTM A234/A234M

Grade	Type	C	Si	S	P	Mn	Cr	Ni	Mo	Other	ób	ós	δ5
WPB	0.3	0.1min	0.058	0.05	0.29-1.06	0.4	0.4	0.15	V:0.06;Nb:0.02	415-585	240	22	197
WPC	0.35	0.1min	0.058	0.05	0.29-1.06	0.4	0.4	0.15	V:0.06;Nb:0.02	485-655	275	22	197
WP1	0.28	0.1-0.5	0.045	0.045	0.3-0.9			0.44-0.65		380-550	205	22	197
WP12 CL1	0.05-0.2	0.6	0.045	0.045	0.3-0.8	0.8-1.25		0.44-0.65		415-585	220	22	197
WP12 CL2	0.05-0.2	0.6	0.045	0.045	0.3-0.8	0.8-1.25		0.44-0.65		485-655	275	22	197
WP11 CL1	0.05-0.15	0.5-1	0.03	0.03	0.3-0.6	1-1.5		0.44-0.65		415-585	205	22	197
WP11 CL2	0.05-0.2	0.5-1	0.04	0.04	0.3-0.8	1-1.5		0.44-0.65		485-655	275	22	197
WP11 CL3	0.05-0.2	0.5-1	0.04	0.04	0.3-0.8	1-1.5		0.44-0.65		520-690	310	22	197
WP22 CL1	0.05-0.15	0.5	0.04	0.04	0.3-0.6	1.9-2.6		0.87-1.13		415-585	205	22	197
WP22 CL3	0.05-0.15	0.5	0.04	0.04	0.3-0.6	1.9-2.6		0.87-1.13		520-690	310	22	197
WP5 CL1	0.15	0.5	0.03	0.04	0.3-0.6	4-6		0.44-0.65		415-585	205	22	217
WP5 CL3	0.15	0.5	0.03	0.04	0.3-0.6	4-6		0.44-0.65		520-690	310	22	217
WP9 CL1	0.15	1	0.03	0.03	0.3-0.6	8-10		0.9-1.1		415-585	205	22	217
WP9 CL3	0.15	1	0.03	0.03	0.3-0.6	8-10		0.9-1.1		520-690	310	22	217
WPR	0.2		0.05	0.045	0.4-1.06		1.6-2.24			435-605	315	22/28	217
WP91	0.08-0.12	0.2-0.5	0.01	0.02	0.3-0.6	8-9.5	0.4	0.85-1.05	See sdandard	585-760	415	20	248
WP911	0.09-0.13	0.1-0.5	0.01	0.02	0.3-0.6	8.5-10.5	0.4	0.9-1.1	See sdandard	620-840	440	20	248

Mechanical properties of ASTM A234

Tensile Requirements	WPB	WPC, WP11CL2	WP11CL1	WP11CL3
Tensile Strength, min, ksi[MPa] (0.2% offset or 0.5% extension-under-load)	60-85 [415-585]	70-95 [485-655]	60-85 [415-585]	75-100 [520-690]
Yield Strength, min, ksi[MPa]	32 [240]	40 [275]	30 [205]	45 [310]

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