Home HEI HEI Tech Sheet #135 HEI Tech Sheet #135$57.76 Original price was: $57.76.$28.88Current price is: $28.88. A Comparison of Welded & Seamless Heat Exchanger TubingData Sheet by Heat Exchange Institute, 07/01/2015 HEI Tech Sheet #135 quantity Add to cart Category: HEI Description Product Details Published: 07/01/2015 Number of Pages: 4 File Size: 1 file , 400 KB Related products HEI Tech Sheet #141HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart HEI Tech Sheet #132HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart HEI Tech Sheet #142HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart HEI Tech Sheet #122HEI $57.76 Original price was: $57.76.$28.88Current price is: $28.88. Add to cart