Document DGMkb07Qe4zaR38MdzBB7EGVd

564 CHAPTER 27 1949 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, A.S.A. B31.1-1942, see Section 122. Standard schedules of pipe thick nesses are contained in the American Standard for Wroughl-Iron and Wrought-Steel Pipe, A.S.A. B36.10, which includes standard-weight and Table 3. Standard Dimensions and Weights, and Tolerances in Diameter and Wall Thickness for Copper Water Tubes* (AU Utterance* in this tabic are plus and minus except as otherwise indicated) Average Outaids Diameter Wall Thickness In.. Theoretical Weight, Lb per Ft Standard Water Tubs Size, In. Actual Outbids Diamstsb In. Tolerance. In. s 1 it V 0.250 0.375 0.002 0.002 0.00! 0.001 0.500 0.0025 0.001 H 0.625 0.0025 0.001 Drawn Temper Nominal Tolerance Nominal Tolerance Ttfb.K i 1 j 0.032 0.032 0.049 0.049 o *H3 0X03 0.004 0.004 0.004 Ttfe L Ttt-sM 0X25 0.030 0X35 1 0X40 0.0025 0.0035 0X035 0X035 .0X25 0.025 0.025 0X28 oQ. oa. s s. s 0X025 0X025 0.0025 0.0025 0.085 0.134 0.262 0X44 0.068 0.126 0.19S 0X85 0X63 0.107 0.145 0X04 H 0.750 0.0025 0X01 0X49 0.004 0X42 0.0035 0.030 0.0025 0.418 0X62 0X63 1H 0.875 0.003 1.125 . 0.0035 0X01 0X65 0.0015 0.065 0.0045 0X45 0.0045 0.050 0.004 0.032 0.003 0.641 0.455 0X28 0X04 0X35 0.0035 0X39 0.655 0.465 m 1.375 0.004 0.0015 0X65 0.0045 0X55 0X045 0X42 0.0035 1.04 0X84 0.682 1M .2 2H 3 1.625 2.125 2.625 . 3.125 0.0045 0.005 0.005 0.005 0.002 0.002 0.002 0.002 0.072 0X83 0.095 0.109 0.005 0.007' 0.007 0X07 0X60 0X70 0X80 0X90 0X045 0.006 0.006 0.007 0.049 0X58 0.065 0.072 0.004 0.006 0.006 0.006 1X6 1.14 2.06 1.75 2.93 2.48 4.00 3X3 0X40 1.46 2.03 2.63/ 3H 3.G25 0.005 0X02 0.120 0.008 0.100 0.007 0X83 0.007 5.12 4.29 3XS 4 4.125 0.005 0X02 0.134 0X10 0.110 0.009 0X95 0X09 6X1 5X8 4.66 5 5.125 0.005 0.002 0.160 0X10 0.125 0.010 0.109 0.009 9.67 7.61 6.66 6 6.125 0.005 0.002 0.192 0.012 0.140 0.010 0.122 0X10 13.9 10.2 8.92 +0.002 8 8.125 0.006 --0.004 0.271 0X16 0.200 0X14 0.170 0X14 25.9 19X 16X +0.002- - 10 10.125 0.008 --0.006 0X38 0X18 0X50 0X16 0X12 0X15 40X 30.1 25.6 +0.002 12 12.125 0.008 -0X06 0.405 0X20 0X80 0X18 0X54 0.016 57X 40.4 36.7 * From Standard Specifications far Copper Water Tube of the American Society for Testing Materials A.8.TM. Designation B88-41. Note 1:--For copper pas and oil burner tubes, the tolerances shown above for various wall thicknesses (type E) apply irrespective of diameter. \ ' Noth 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 A.S.T.M. Specifications A53 and A120 combines the schedule thicknesses of A.S.A. 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 565 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 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. Thermal Expansion of Pipe in Inches per 100 ft* (For superheated steam and other fluids refer to temperature column) Saturated Steam Elongation in Inches per 100 PI P80M -- 20 F UP Saturated Steam - Elongation in Inches pee F100 IT PROM -- 20 UP Tem Vacuum Inches of Hg. Pressure Bog perature Fahren heit Degrees CastIron Pipe Tem Steel Pipe WrougbtIron Pipe Copper Pipe Pressure Peig perature Fahren heit CastIron ' Pipe Degrees Steel Pipe WrooghtIrun (kijiper 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 40 0.390 0.430 0.465 0.655 34.5 280 2.085 2.350 2.465 .3.422 29.39 60 0.518 0.593 0 620 n ra Ft9. 3 300 9.933 9 filQ 9 28.89 ___ __ ___ 80 0.649 0.725 0.780 1.100 74.9 320 2.395 2.690 2^800 .3.900 27.99 __________ 100 0.787 0.898 0.939 1.338 103.3 340 2.543 2.862 2.988 4.145 26.48 ................. 120 0.926 1.055 1.110 1.570 138.3 360 2.700 3.029 3.175 4.380 24.04 _______ 140 1.051 1.209 1.265 1.794 180.9 380 2.859 3.211 3.350 4.628 20.27 __________ 160 1.200 1.368 1.427 2.008 232.4 400 3.008 3.375 3.521 4.870 14.63 180 1.345 1.528 1.597 2.255 293.7 420 3.182 3.566 3.720 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 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 60F and is to operate at 300 F, the expansion would be 2.519 -- 0.593 = 1X26 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 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 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 bidden 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