Singamas Qingdao Factory Directly Produce and Sell 20ft Three Side Door Open Container

The rear frame consists of one door header, one door sill, four corner castings and two rear corner posts.

Product Details

1.The Rear Frame

The rear frame consists of one door header, one door sill, four corner castings and two rear corner posts.

1.1 Rear Corner Post

Each corner post is constructed from an inner part of channel shaped hot-rolled section steel and an outer part of steel pressing, welded together to form a hollow section to ensure the door opening and suitable strength against the stacking and racking force. Four (4) sets of hinge pin lugs are welded to each outer part of the corner post.

1.2 Door Header

The door header is constructed from a lower part of a "U" shaped steel pressing with internal stiffener ribs at the location of the cam keeper’s backside and an upper part of steel pressing rear header plate, they are welded together to form a box section to provide a high rigidity.

1.3 Door Sill

The door sill is built of a special channel section steel pressing with internal ribs as stiffeners at the backside of each cam keeper. The upper face of the sill has a slope for better drainage and the highest part is on the same level to the upper face of the wooden floor. Two channel section steel recesses are provided adjacent to the bottom casting to prevent damage due to any twistlock misalignment.

2.Side Wall Assembly

The side walls will be continuously welded to each other and to the side rails and corner posts. Welding penetration side panels to rails should be min.75%.

2.1 Top Side Rails

Each top side rail is used a square steel pipe.          

2.2Side Walls

Each side wall will be composed of a number of sheets for the intermediate (inner) parts and outer panels at each end of side wall, fully vertically corrugated into trapezium section, butt welded together to form one panel by automatic welding. 


The roof will be constructed by several die-stamp corrugated steel sheets with a certain upwards camber at the center of each trough and corrugation, these sheets are butt jointed together to form one panel by automatic welding.




Side Door Opening






12,192 mm

2,502 mm

2,060 mm




8'-2 1/2”

6’- 9 3/32”


5’-2 31/32"






Max Gross Weight

Tare Weight

Max Payload

12,094 mm

2,422 mm

1,657 mm

28,220   Kg

5,720 Kg

22,500 Kg

39’- 8 1/8”

7’-11 11/32”

5’- 5 7/32”

62,214  Lbs

12,610 Lbs

49,604 Lbs

Cubic Capacity

Allowable Stacking Weigh

48.5 cu.m

1,708 cu.ft

60,960 Kg

134,394 Lbs

Special Feature

1.Side doors on both sides makes cargo loading and unloading easy.

PACIFIC CONTAINER, one of the largest manufacturers and suppliers in China, is equipped with the most advanced equipment and technology. And catering to your special requirement, our factory also offer you the customized service. Welcome to buy the singamas qingdao factory directly produce and sell 20ft three side door open container with us.