Pipe and Tube Thickness BGBataller Instructor 7, ChE Dept CEAT-UPLB

Pipe and Tube Thickness Ferrous Materials Rearranging,

Ferrous Material Allowable Stress

Pipe and Tube Thickness Allowance

Pipe and Tube Thickness Non-Ferrous Materials Limitations:

Non-Ferrous Mat’l Allowable Stress

Pipe and Tube Thickness Allowance

Pipe and Tube Thickness Steam Application Applicable for STEEL or WROUGHT IRON pipe whose NPS ≤ 4 inches

Pipe and Tube Thickness Steam Application Applicable for STEEL or WROUGHT IRON pipe whose NPS > 4 inches

Pipe and Tube Thickness Oil Application >> use steam application provided that the allowable stress (S) is multiplied by 1.25

Pipe and Tube Thickness Cast Iron Pipe >> equation for steam application is also applicable >> Add allowance to the internal pressure

Pipe and Tube Thickness Cast Iron Pipe >> Allowable stress (S) and Allowances (C)

Pipe and Tube Thickness Plastics – PVC – PE, PB

Pipe and Tube Thickness Plastics – Fiberglass

Sample Problems Problem 1 Compute for the pipe thickness of a 2 in (actual outside diameter) S-17 seamless steel pipe with a working pressure and temperature of 300 psi and 650 ºF respectively.

Sample Problems Problem 2 Calculate the thickness needed of a threaded steam bronze pipe ( for gas application ) with nominal diameter of 3 in and working temperature and pressure of 250 F and 200 psi respectively.