ASME B16.9 ASTM A403 1.4539 Reducing Tee 4 Inch – 2 Inch SCH40S

Type: 1.4539 Reducing Tee
Size: 4” x 2″ (DN100 – DN50)
WT: SCH40S
Material: 904L (UNS N08904/1.4539/SS2562)
Standard: ASME B16.9

Composition ranges of grade 904L stainless steels

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	Cu
904L	min. max.	– 0.02	– 2	– 1	– 0.045	– 0.035	19 23	4 5	23 28	1 2

Mechanical properties of grade 904L stainless steels

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B)	Brinell (HB)
904L	490	220	36	70-90 typical	150

Pipe tee has three branches that can change fluid direction. It has T-shaped or Y-shaped, and include Equal Tee and Reducing Tee (Reducer Tee). Steel tee is widely used in pipe networks for convey liquids and gases.

• Equal tee: Three branches of tee have same diameters. Also named as Straight Tee.
• Reducing tee (Reducer Tee): The branch diameter is smaller than main diameter. The reducing tee is usually described as NPS diameters in 4” x 4” x 3”,  where 4” is the main line pipe diameter, and 3” is the reducing branch.

Butt weld tee is widely used in petroleum, aerospace pharmacy, chemical industry, metallurgy, electric power, military industry, engineering support and other industrial pipelines.

Ends in plain or beveled, connected by butt welding process. It can withstand higher pressure than other types. The size of butt weld tee should be specified in pipe NPS (DN) and thickness in schedule, where the socket weld tee or thread tee thickness should be specified in the pressure level.

Butt weld tee is divided into seamless cold-drawn tee and seam welding tee in the production process.

Dimensions Butt Welded Reducing Tees ASME B16.9NPS 1/2 to 4

NPS	O.D. D	O.D. D1	Center to End C	Center to End M
3/4 – 1/2	26.7	21.3	29	29
1 – 1/2	33.4	21.3	38	38
1 – 3/4	33.4	26.7	38	38
1.1/4 – 1/2	42.2	21.3	48	48
1.1/4 – 3/4	42.2	26.7	48	48
1.1/4 – 1	42.2	33.4	48	48
1.1/2 – 1/2	48.3	21.3	57	57
1.1/2 – 3/4	48.3	26.7	57	57
1.1/2 – 1	48.3	33.4	57	57
1.1/2 – 1.1/4	48.3	42.2	57	57
2 – 3/4	60.3	26.7	64	44
2 – 1	60.3	33.4	64	51
2 – 1.1/4	60.3	42.2	64	57
2 – 1.1/2	60.3	48.3	64	60
2.1/2 – 1	73	33.4	76	57
2.1/2 – 1.1/4	73	42.2	76	64
2.1/2 – 1.1/2	73	48.3	76	67
2.1/2 – 2	73	60.3	76	70
3 – 1.1/4	88.9	42.2	86	70
3 – 1.1/2	88.9	48.3	86	73
3 – 2	88.9	60.3	86	76
3 – 2.1/2	88.9	73	86	83
3.1/2 – 1.1/2	101.6	48.3	95	79
3.1/2 – 2	101.6	60.3	95	83
3.1/2 – 2.1/2	101.6	73	95	89
3.1/2 – 3	101.6	88.9	95	92
4 – 1.1/2	114.3	48.3	105	86
4 – 2	114.3	60.3	105	89
4 – 2.1/2	114.3	73	105	95
4 – 3	114.3	88.9	105	98
4 – 3.1/2	114.3	101.6	105	102

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer.

DIMENSIONAL TOLERANCES REDUCING TEES ASME B16.9

Nominal Pipe Size	1/2 to 2.1/2	3 to 3.1/2	4	5 to 8	10 to 18	20 to 24	26 to 30	32 to 48
Outside Dia at Bevel (D)	+1.6 -0.8	1.6	1.6	+2.4 -1.6	+4 -3.2	+6.4 -4.8	+6.4 -4.8	+6.4 -4.8
Inside Dia at End	0.8	1.6	1.6	1.6	3.2	4.8	+6.4 -4.8	+6.4 -4.8
Center to End (C / M)	2	2	2	2	2	2	3	5
Wall Thk (t)	Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.

Note:
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 – NPS 24. Except with regard to the outside diameter at the bevel.