Specifications

Standard:EN10305-1
Material:34CrMo4,42CrMo4
Size:40*30-325*300
Manufacture:cold drawn+SRB
Heat treating: BKS,NBK

Hot finished steel tube can be boiler steel tube and precision steel tubes. In Changzhou Chengxin,we can manufacture cold rolled or hydraulic cold drawn seamless steel tubes upto 325mm*50mm.

 

Commodity: hot finished steel tube

Standard&material: DIN2391-2 ST35,ST45,ST52, EN10305-1 E235,E355,C35E,C45E,25CrMo4,34CrMo4,42CrMo4,ASTM A519 SAE1010,SAE1020,SAE1026,SAE1035,SAe1045,SAE4130,SAE4140,etc.

Size range: 10mm*1mm-325mm*50mm

Length: 13.8 meters max.

Manufacture method: cold rolled, cold drawn, hydraulic cold drawn

Delivery condition:

BK	BKW	BKS	GBK	NBK
+C	+LC	+SR	+A	+N
cold drawn/hard	cold drawn/soft	stress relieved	annealed	normalized

OD tolerance: as per standard specification.

ID tolerance: +/-0.2mm for tubes with ID below 100mm, +/-0.3mm for tubes with ID below 250mm, +/-0.4mm for tubes with ID below 300mm.

Straightness: 0.5mm/1000mm max, 0.8mm/1000mm max, 1.2mm/1000mm max depending on different size and length.

Packing: in bundles tied with steel strips.

Slightly internal and external oil coating for anti-rust protection.

End plastic caps.

External packing to be confirmed.

Marking on each tube: to be confirmed.

Shipping: we suggest container shipping.

  

Based on our expertise and manufacturing facilities, the following services can be negotiated for supply:

1. Tubes with special requirement about ovality,straightness,surface quality, eccentricity,etc.

2. Internal honing, rough honing, internal skiving&roller burnishing.

3. External surface machining, polishing, grinding.

We are ISO9001-2008 certified manufacturer of precision steel tubes, mechanical tubings,tubes for hydraulic cylinders, and hydraulic cylinder barrels. Our annual capacity of cylinder tubes have reached 12000 tons.

Payment method: we accept T/T. L/C,D/P,etc.

MOQ: 3 tons for each size. Less quantity can be negotiated for supply.

Trade term: we accept FOB,CFR,CIF,DAP,etc.

Third party inspection or customer's inspection are both acceptable.