When visually "bumpy," the outside of Ductile iron pipe, in case you slide your hand together the floor, feels comparatively smooth - just like a golf ball �?texture vs. feel. That is because the texture utilized is totally purposeful and proprietary to each DI pipe manufacturer. To be able to https://www.facebook.com/permalink.php?story_fbid=pfbid027cWGBNYnrr5s31yXc9gsF1KDve1CVFq4svtbZVndNXYNnAAyPwEkGiACgd3K8DVSl&id=61560512640678&__cft__[0]=AZUtd_rAbo9pxmirVkJka3kSS_v459O8-lHew2njSBrCDTvNgXocdZBk1UCowUDIM6xwQdtvpx81YWjKfX6OkL0sX-ibXzkmAQVICvJmu16mgTT81rWPns4QPHGrB6QIvHA8VPKduOnIpxIkwdn5eALgFNfvq9T2CcLITXHChMvTMaljqb4K3X05LZfyWH87E4vbWcgeu600carCK4eP-MT3&__tn__=%2CO%2CP-R