
S_ = {
    'A-106 GR B': 35000*(2/3), #Assuming pipe is A-106 GR B, Yield stress is 35000, take 2/3 fraction of it for allowable
}

E_ = {
    'Seamless': 1.00,
    'Furnace Butt Welded': 0.60,
    'Electric Resistance Welded': 0.85
}