Johns tin shed steel manufacturers in kraaifontein johnstinshed.co.za. show phone number. remember you found this company at infoisinfo (07) 6296 200? address.. Johns tin shed is located at joostenberg vlakte, kraaifontein. contact 076 296 ****. view the latest reviews, photos and videos of johns tin shed.. Contact details for john’s tin shed categories: blacksmith, construction & diy, contractors, industry, joostenberg vlakte.