Document G55e93Xgex7kRZkg8pJRKn0nn

588 CHAPTER 26 1952 Guide i- ' of- pipe by welding sometimes warrants using ' lighter wall thicknesses. The considerations governing pipe wall thickness and its relation to joint design are covered in the American Standard Code for Pressure Piping,ASA B31.1-1942, see Section 122. Standard schedules of pipe thick nesses are contained in the American Standard for Wrought-Iron and Wrought-Steel Pipe, ASA B36.10, which includes standard-weight and ' Table 3. Standabd Dimensions and Weights, and Tolebances in Diameteb and Wall Thickness fob Coppeb Wateb Tubes* (AU tolerance* in this table are plus and minus except as othenoise indicated) Avebagx Out side DlAUKTXB ' Standabd Actual Water Outbids Site, In. In. Tolerance, In. Wall Thickness In. TtpbK Trra L TmM Theoretical Wejoht, Lb peb Ft Drawn Temper j Nominal Nominal Tolerance Type L 8 <ag M 0.250 0.002 0.001. 0.032 0.375 0.002 0.001 0.032 12 0.500 0.0025 0.001 0.049 H 0.625 0X025 0X01 0.049 % 1 ia 0.750 0.873 1.125 <1.375 0X025 0.003 0X035 0.004 0X01 0.049 0.001 0.065 0X015 0X65 0.0015 0.065 m 1.625 : 0X015 0.002 0X72 m2 ;: 2.125 0.005 2.625 .0.005 0.002 0X83 0.002 0.095 3 3.125 0.005 0.002 0.109 3M 3.625 0X05 0.002 0.120 4 Al2b 0X05 0.002 0.134 5 5.125 0.005 0.002 0.160 6 6.125 0.005 0.002 0.192 8 . 10 12 8.125 10.125 . 12.125 0X06 0X080X08 +0.002 -0.004 +0.002 -0X06 +0.002 -0X06 0.271 0338 0.405 f *3 H 0X03 0X04 0X04 0.004 0.004 0X045 0X045 0.0045 0.005 0.007 0.007 0X07 0X08 0.010 0.010 0X12 0X25 0X30 0X35 0.040 0X42 0.045 0.050 0X55 0.060 0.070 0.080 0X90 0.100 0.110 0.125 0.140 0X16 0X18 0.020 0.200 0X50 0X80 I3 oa "o S5 S 1 0X025 0.0035 0.0035 0.0035 0.025 0.025 0.025 0X28 0X025 0.0025 0.0025 0.0025 0X85 0.068 0.134 0.126 0X69 0.193 0X44 0X85 0.06S 0.107 0.145 0X04 0.0035 0.004 0X04 0X045 0X30 0.032 0.035 0X42 0.0025 0X03 0.0035 0.0035 0.418 0X62 0.641 0.455 0X39 0.655 1.04 0X84 0X63 0X28 0.465 0.682 0.0045 0.049 0X04 1X6 1.14 0.006 0X58 0.006 2X6 1.75 0.006 0.065 0.006. 2.93 2.48 0.007 0X72 0.006 4.00 3X3 0.940 1.46 2.03 2,68 0.007 0.009 0.010 0.010 0.083 0.095 0.109 0.122 0X07 0.009 0X09 0X10 5.12 4X9 6X1 5X8 9.67 7.61 13.9 10.2 3X8 4.66 6.66 8.92 0.014 0X16 0.018 0.170 0X12 0X54 0.014 253 0X15 40X 0.016 57X 19X 30.1 40.4 16X' 25.6 36.7 * Prom Standard Specifications for Copper Water Tube of the American Society for Testing Materials'AJ3. T.M. Designation B88-41. Note 1:--For copper gas and oil burner tubes, the tolerances shown above for various wall thi<1rnpM*ft (type K) apply irrespective of diameter. Note 2:--For'tubes other than round no standard tolerances are established. These tolerances do not apply to condenser and heat exchanger tubes. extra-strong thicknesses in Schedules 40 and 80, respectively, and eight other schedules of varying wall thickness to provide for different service conditions. Dimensions and other useful data for Schedules 30 and 40 pipe are given in Table 1. Table 2 from AJS.T.M. Specifications A53 and A120 combines the schedule thicknesses of ASA B36.10 and the old series designations. Standard-weight pipe is generally furnished with threaded ends in random lengths of 16 to 22 ft, although when ordered with plain ends, 5 percent may be in lengths of 12 to 16 ft. Five percent of the total number of lengths ordered may be jointers which are two pieces coupled together. % f % I i` f | Pipe, Fittings, Welding 589 Extra-strong pipe is generally furnished with plain ends in random lengths of 12 to 22 ft, although 5 percent may be in lengths of 6.to 12 ft. In addition to IPS copper pipe, several varieties of copper tubing are in use with either flared or compression couplings or soldered joints. Dimen sions of copper water tubing intended for plumbing, underground water service, fuel-oil lines, gas lines, etc., have been standardized by the U. S. Government and the American Society for Testing Materials. There are Table 4. Thebmal Expansion of Pipe in Inches peb 100 ft* (For superheated steam and other fluids refer to temperature column) Saturated Steam Elongation in Inches peb 100 rr from -- 20 F up Saturated Steam. Elongation in Inches peb 100 rr raoM --20 F up Tem Vacuum Inches of Bg. Pressure Psig perature Fahren heit Degrees CastIron Pipe Steel Pipe Tem CrTWrougbtIron Hpe Pressure Rig perature Fahren heit CastIron Kps Degrees Steel Pipe Wrought- Iron . Pipe Copper Pipe -20 0 0 0 0 2.5 220 1.634 1.852 1.936 2.720 0 0.127 0.145 0.152 0.204 10.3 240 1.780 2.020 2.110 2.960 20 0.255 0.293 0.306 0.442 20.7 260 1.931 2.183 2.279 3.189 .29.39 .............. ____28.89 _ 40 0.390 0.430 0.465 0.655 60 0.518 0.593 0.620 0.888 80 0.649 0.725 0.780 1.100 34.5 52.3 74.9 280 2.085 2.350 2.465 .3.422 300 2.233 2.519 2.630 3.665 320 2.395 2.690 2.800 3.900 27.99 26.48 24.04 20.27 14.63 _ ......... ____ ____ ____. ____ 100 0.787 0.898 0.939 1.338 103.3 340 120 0.926 1.055 1.110 1.570 138.3 360 140 1.051 1.209 1.265 1.794 180.9 380 160 1.200 1.368 1.427 2.008 232.4 400 180 1.345 1.528 1.597 2.255 293.7 420 2.543 2.700 2.859 3.008 3.182 2.862 3.029 3.211 3.375 3.566 2.988 3.175 3.350 3.521 3.720 4.145 4.380 4.628 4.870 5.118 6.45 -- 200 1.495 1.691 1.778 2.500 366.1 440 3.345 3.740 3.900 5.358 * From Piping Handbook. by Walker and Crocker. This table gives the expansion from -20 F to the tem perature in question. To obtain the amount of expansion between any.two temperatures take the differ ence between the figures in the table for those temperatures. For example, if a steel pipe is installed at a tem perature of 60 F and is to operate at 300 F, the expansion would be 2.519 -- 0.593 = 1.926 in. three standard wall-thickness schedules of copper water tubing classified in accordance with their principal uses' as follows: Type K--Designed for underground services and general plumbing service. Type L--Designed for general plumbing purposes. Type M--Designed for use witn soldered fittings only. In general, Type K is used where corrosion conditions are severe, and Types L and M where such conditions may be considered normal as, for instance, in heating work. Types K and L are available in both hard and soft tempers; Type M is available only in hard temper. Where flexibility is essential as in hidden replacement work, or where as few joints as possible are desired as in fuel-oil lines, the soft temper is commonly used. In new or exposed work copper pipe of a hard temper is generally used. All three classes are extensively used with soldered fittings. Standard dimensions, weights, and diameter and wall-thickness toler ances for these classes of copper tubing are given in Table 3. Copper pipe is also available with dimensions of steel pipe. Refrigeration lines used in connection with air conditioning equipment also employ copper tubing extensively. For refrigeration use where tubing absolutely free from scale and dirt is required, bright annealed copper