Flat welding flange

Used for pipeline connection in chemical industry, power plant, sewage, etc.

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Classification

Product Parameters
Product Name	Flat welding flange (PL)
Product Brand	ZB-STEEL FITING
Material	A105、ASTM A350、ASTM A694、Q345E、Q235、SS304 、SS31603等
Specifications	DN10-2000 to map custom
Use	Application of chemical, power plant, construction, fire, municipal, drinking water, sewage and other pipeline connections

Table 8.2.1-4 PN16 Plate Flat Welded Steel Pipe Flanges (mm)
Nominal Dimensions DN	Outer diameter of steel pipe A₁		Connection dimensions					Flange Thickness C	Flange inner diameter B₁		Groove Width b
	Outer diameter of steel pipe A₁		Flange Outer diameter D	Bolt hole Central circle diameter K	bolt hole Diameter L	bolt hole Quantity n (number)	Bolt Th		Flange inner diameter B₁
	A	B	Flange Outer diameter D	Bolt hole Central circle diameter K	bolt hole Diameter L	bolt hole Quantity n (number)	Bolt Th		A	B
10	17.2	14	90	60	14	4	M12	14	18	15	4
15	21.3	18	95	65	14	4	M12	14	22.5	19	4
20	26.9	25	105	75	14	4	M12	16	27.5	26	4
25	33.7	32	115	85	14	4	M12	16	34.5	33	5
32	42.4	38	140	100	18	4	M16	18	43.5	39	5
40	48.3	45	150	110	18	4	M16	18	49.5	46	5
50	60.3	57	165	125	18	4	M16	19	61.5	59	5
65	76.1	76	185	145	18	8	M16	20	77.5	78	6
80	889	89	200	160	18	8	M16	20	90.5	91	6
100	114.3	108	220	180	18	8	M16	22	116	110	6
125	139.7	133	250	210	18	8	M16	22	143.5	135	6
150	168.3	159	285	240	22	8	M20	24	170.5	161	6
200	219.1	219	340	295	22	12	M20	26	221.5	222	8
250	273	273	405	355	26	12	M24	29	276.5	276	10
300	3,239	325	460	410	26	12	M24	32	328	328	11
350	355.6	377	520	470	26	16	M24	35	360	381	12
400	406.4	426	580	525	30	16	M27	38	411	430	12
450	457	480	640	585	30	20	M27	42	462	485	12
500	508	530	715	650	33	20	M30	46	513.5	535	12
600	610	630	840	770	33	20	M30	52	616.5	636	12