Specifications

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

In Changzhou Chengxin,cold drawn seamless steel tube is made from hot rolled seamless steel pipes and are finally used in mechanical,engineering,fluid power,machinery,spart parts,etc.

We manufacture cold drawn seamless steel tube with perfect surface quality,very tight size tolerance,and good ovality,straightness,eccentricity,etc.

The size we can manufacture is upto 325mm*50mm.

Commodity: cold drawn seamless 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.