Document 2qj0Jq8mgOvYk55mjbKowaRXp

560 CHAPTER 26 ... 1950 Guide 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 WrougM-Iron and Wrought-Steel Pipe, ASA B36.10, which includes standard-weight and Table 3. Standard Dimensions and Weights, and Tolerances in Diameter and Wall Thickness fob Copper Water Tubes* (All tolerance* in this table are plus and except as otherwise indicated) Average OutSIDE DtAHSTER ' Theoretical Weight. Lb per Ft Standard Water Sox, In. Actual Outride Diabetes In. H - 0.625 H .K 1 m 1.375 1.625 2.125 m 3 . 3.125 ZH 6 6.125 8 8.125 10 10.125 12 12.125 Tolerance. In. ' Tire K II& 1 <9 <9 `Zog 0.002 0.002 0.0025 0.001 0.001 0.001 0.001 0.032 0.032 0.049 0.049 0.0025 0.003 0.0035 0.004 0.001 0.049 0.001 0.065 0.0015 0.065 0.0015 0.065 0.0045 0.005 0.005 0.005 .0.002 0.002 0.002 0.002 0.072 0.083 0.095 0.109 0.005 0.005 0.005 0.005 0.002 0.002 0.002 0.002 0.120 0.134 0.160 0.192 0.006 0.008 +0.002 --0.004 +0.002 -0.006 0.271 0.338 0.008 -0.006 0.405 <g5 3 f- 0.003 0.004 0.004 0.004 0.004 0.0045 0.0045 0.0045 0.005 0.0070.007 0.007 0.008 0.010 0.010 0.012 0.016 0.018 0.020 TvpbL TtpeM l*aa *3 8 *aa *3 a .g ri 2 . & o 55 ' H 55 S-* E- 0.025 0.030 0.035 .0.040 0.0025 0.0035 0.0035 0.0035 0.025 0.025 0.025 0.028 0.0025 0.0025 0.0025 0.0025 0.035 0.068 0.134 0.126 0.269 Orl93 0.344 0.285 0.06S 0.145 0.204 0.042 0.0035 0.045 - 0.004 0.050 0.004 0.055 0.0045 0.030 0.032 0.035 0.042 0.0025 0.003 0.0035 0.0035 0.418 0.641 0.839 1.04 0.362 0.455 0.655 0.884 0.263 0.465 0.682 0.060 0.070 0.080 0.090 0.0045 0.006 0.006 0.007 0.049 0.058 0.065 0.072 0.004' 0.006 0.006 0.006 U6 2.06 2.93 4.00 1.14 1.75 2.48 3.33 0.940 2.63. 0.100 0.110 0.125 0.140 0.007 0.009 0.010 0.010 0.083 0.095 0.109 0.122 0.007 0.009 0.009 0.010 5.12 6.51 9.67 13.9 4.29 5.38 7.61 10.2 3.58 4.66 6.60 8.92 0.200 0.250 0.280 0.014 0.016 0.018 0.170 0.212 0.254 0.014 25:9 0.015 40.3 0.016 57.8 19.3 30.1 40.4 16.5 25.6 36.7 . * From Standard Specifications for Copper Water Tube of the American Society for Testing Materials AJ3.TM. Designation B88-41. - Note 1:--For oopper gas andoil burner.tubes, the tolerances shown above for various wall thicknesses (type K) apply imspective of diameter. . f *. Note 2:--For tubes other than .round nonstandard 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 A.S.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 per cent may be in lengths of 12 to 16 ft. Five per cent of the total number of lengths ordered may be jointers which are two pieces coupled- together. -Pipe; Fittings, Welding 1561 'Extra-strong, pipe is generally furnished with plain.ends in random lengths of 12 to 22 ft, although 5 per cent may be in. lengths of 6 to 12 ft. " ' -- In addition ta IPS copper pipe, several varieties of copper tubing are inuse 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. Thermal Expansion of Pipe in Inches per 100 ft* Sat crated Steam (For superheated steam and other fluids refer, to temperature column) , ... Elongation in Inches psb 100 n prom -- 20 F up Saturated Steak Elongation in Inches pee 100 FT FBOU -- 20 F UP Tem Vacuum Inches - of Hg.- Pressure ftig perature Fahreo-- beit CastIron Pipe Degrees Tem Steel .Pipe Wrought* Iron -Pipe Copper Pipe - Pressure Psig perature Fahrea-' heit Degrees Caat- Iroa Kpe Steel Pipe WroughtIron Pipe- 29.39 28.89 27.99 26.48 24.04 20.27 14.63 6.45 -- -- -- -- -20 0 .20 40 60 80 100 120 140 160 180 200 0 0 0 0 2.5 0.127 0.145 0.152 0.204 10.3 0.255 0.293 0.306 0.442 20.7 0.390 0.430 0.465 0.655 34.5 0.518 0.593 0.620 0.888 52.3 0.649 0.725 0.780 1.100 74.9 0.787 0.898 0.939 1.338 103.3 0.926 1.055 1.110 1.570 138.3 1.051 1.209 1.265 1.794 180.9 1.200 1.368 1.427 2.008 232.4 1,345 1.528 1.597 2.255 -293.7 1.495 1.691 1.778 2.500 366.1 220 240 260 280 300 320 340 360 380 400 420 440 1.634 1.852 1.936 2.720 1.780 2.020 2.110 2.960 1.931 2.183 2.279 3.189 2.085 2.350 2.465 .3.422 2.233 2.519 2.630 3.665 2.395 2.690 2.800 3.900 2.543 2:862 2.988 4.145 2.700 3.029 -3.175 4.380 2.859 3.211 3.350 4.628 3.008 3.375 3.521 4.870 3.182 3.566 3.720 5.118 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 temperature in question. To obtain the amount of expansion between any two temperatures take the dif ference between the figures in the table for those temperatures. For example, if a steel pipe is installed at a temperature 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 3f--Designed for use with 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 nbrmal as, for instance, in heating work. . Types K and L are available in both hard and soft tempers; Type M is available only in bard, 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