Product Details

WELCOME TO OUR WEBSITE

company information

our company located in the beautiful coastal city -Yantai,and established in 1992,we mainly produces various specifications of cold finished precision steel tube, wihich are widely used in hydraulic and pneumatic cylinder for automobile ,engineering machinery ,textil machinery ,printing machinery ,oil drilling and other filed ,our company was equipped with various advanced testing machine which can exhaustive analysisi of the product and promise the quality .so welcome to our company to visiting and negotiate business .

ABOUT OUR PRODUCTS

Article	AISI 4130 cold rolled seamless steel tube high precision hydraulic steel pipe
Surface	according to the customer’s acquirement
Length	1m - 6m or as your requirement
W.T.	2-30mm
O.D.	30-250mm
Application	Vehicles, engineering machinery hydraulic chassis, air piping system, etc
Packing	We usually bundle with steel strips ,branding parcel ,wooden box
Terms conditions	CIF,CFR,FOB
Payment	should be 30% in advance by T/T and the balance upon B/L copy or L/C.
Delivery Time	25 days after received the deposit by T/T
Note	we can produce other standard as the customers' requirement

THE TOLERANCE OF DIMENSION

Size of I.D	I.D Tolerance			Tolerance of wall thickness
Size of I.D	H8	H9	H10	±7.5% >210mm ±10%
30	+0.0330	+0.0520	+0.0840
>30-50	+0.0390	+0.0620	+0.1000
>50-80	+0.0460	+0.0740	+0.1200
>80-120	+0.0540	+0.0870	+0.1400
>120-180	+0.0630	+0.1000	+0.1600
>180-250	+0.0720	+0.1150	+0.1850
>250-315	+0.0810	+0.1300	+0.2100

ABOUT SOME DIMENSION

40*50	90*110	140*170	190*215
40*55	95*110	145*170	190*220
50*60	95*115	150*170	190*225
50*65	100*110	150*175	200*220
55*70	100*114	150*180	200*225
60*70	100*115	155*180	200*230
60*75	100*120	160*175	200*245
60*78	100*125	160*180	200*250
63*73	105*125	160*185	220*250
63*75	110*125	160*190	220*270
63*76	110*130	160*195	225*250
63*78	115*130	165*190	240*273
65*80	115*135	165*205	250*290
70*80	120*140	170*200	250*300
70*82	125*140	180*200	260*300
70*85	125*145	180*205	280*323
70*90	125*150	180*210	280*355
75*90	130*150	180*215	300*350
80*92	130*155	180*220	200*213
80*95	130*160	185*205	200*216
80*100	135*160	185*215	250*266
85*100	140*160	185*220
90*105	140*165	190*210

SOME FINISHED PRODUCTS

ABOUT APPLICATION

Application

Cold drawn or cold rolled precision seamless steel tubes

for hydraulic pressure and pneumatic services.

For Auto use,machinery use,oil cylinder tube,motorcycle

shock reducer use,auto shock reducer inner cylinder,gas spring use etc.

Seamless steel pipes for low and medium pressure boiler,

high pressure boiler, ship-building,Liquid service, petroleum cracking,

chemical fertilizer equipment,Drawing-oil-equipment and structure purposes.

ABOUT OUR CERTIFICATE

ABOUT OUR SERVICES

1. Cargo track service during transporting and feedback service after cargo is loaded on board

2. Flexible terms of payment by

3. Big discount for repeat customers

4. Smooth delivering procedure

5. Payment Terms: T/T , L/C And so on.

OUR PROCESSING

PACKAGING AND SHIPPING

(1)Delivery time: In 20 days or according to client's requires

(2)Trade terms: EXW/FOB/CIF etc

(3)Payments: T/T or L/C or according to client's requires

(4)Port: Yantai or Qingdao

(5)MOQ: 5 metric tons or at customer's demands

(6)Packing: we usually bundle with steel strips ,branding parcel or wooden box outside ,or according to the customer’s acquirement

TESTING

1.100% PMI,Spectro Chemical Aanlysis Test for Raw Material

2.100% Dimension & Visual Examination

3. Mechanical Properties Test Include Tension Test,Flaring Test (For Seamless tube/pipe)/ Flange Test (For Welded Pipe & Tube), Hardness Test ,Reversed Flattening Test

4.100% Hydrostatic Test or 100% NON-DESTRUCTIVE Test (ET or UT)

5.Radiographic Test for Welded Pipe (shall be accordance with specification,or shall be as agreed upon between the purchaser and vendor)

6.Straightness Test (optional)

7.Roughness Test (optional)

8.Intergranular Corrosion Test(optional)

9.Impact Test (optional)

10.Grain Size Determinations (optional)

NOTES : ALL THE TESTS AND INSPECTION RESULT NEED TO BE SHOWED IN REPORTS ACCORDING TO STANDARD AND SPECIFICATION.

FAQ

why you choose us ?

1. Free sample can be provided

2. Small order is acceptable