We have assembled a huge range of weld on fittings to make the job of fabricating a tank, radiator or your speciality job a breeze. When you are fabricating you donât have the time to search for the right part, which is why we have this complete range available right off the shelf! 999-03-D 999-04-D 999-06-D 999-08-D 999-10-D 999-12-D 999-16-D 999-03-S 999-04-S 999-06-S 999-08-S 999-10-S 999-12-S 999-16-S 999-03-SS 999-04-SS 999-06-SS 999-08-SS 999-10-SS 999-12-SS 999-16-SS