These are made with a brass body and hardened shackle. When in use the hardened shackle is protected by what it is locked onto which makes it harder to attack the hardened shackle. 80MM Brass Rectangular Padlock With Hardened Shackle.
eBay
Burglar Padlock With 3 Steel Keys only, other accessories demo in the picture is not included! Made of stainless steel material, it is in durable and corrosion resistance. Material: Stainless Steel.
eBay
eBay
Centre Roller Shutter Door Lock Standard (155mm x 55mm). Body: 155mm x 55mm x 15mm. Roller Shutter Locks. Centre Roller Shutter Lock Standard. Barrell 10.5mm Projection. Door Handles. Garage Door Handles.
eBay
Solid Steel Heavy Duty Padlock for Securing Shutters and similar. Steel construction. Brass cylinder for protection against corrosion.
eBay
Close Armoured Shutter Lock Padlock 60mm combines industrial-grade security with robust construction. The hardened steel rotating shackle resists cutting from all saw types, whilst the anti-drill cylinder with ball-bearing locking mechanism defeats forced entry attempts. A reinforced steel body with brass cylinder provides corrosion resistance and durability in demanding environments. Supplied with three steel keys for convenient access management. Ideal for securing shutters, gates, and high-value assets requiring professional-level protection.
eBay
Specification:Product Name Rolling Shutter Door Lock Material Metal Color Gold Tone Key Way Cross Size 24 x 5.5 x 1.2cm/ 9.4" x 2.2" x 0.5"(L*W*T) Locked Length 28.4cm/ 11.2" Each Mounted Hole Diameter 0.65cm/ 0.26" Weight 280g Package Contents 1 x Rolling Shutter Door Lock3 x Keys Description:Rolling shutter door lock with 3 pcs iron keys for rolling shutter door use, easy to install.This is cross keyway kind.A common lock for warehouse, garage, store door.
eBay
Rotating Shackle Virtually Eliminates The Chance Of Hack Sawing Through the Shackle. Steel Shutter Padlock. 1 x Steel Padlock. 50MM - 60MM - 70MM. Size:50mm,60mm,70mm. Coat Hangers. Kitchen, Dining & Bar Supplies.
eBay