Tsisco Industrial Ltd.

 中文 | English  

E-mail Login | Home Page | Sitemap | Contact

Stainless Hollow Bars

Stainless Hollow Bars

Stainless Hollow Bars
+
  • Stainless Hollow Bars

Stainless Steel Hollow Bars

1) Overview

Stainless steel hollow bars are round bars with a central bore, manufactured by hot rolling, piercing, cold drawing/rolling, and solution annealing.
Compared with solid bars, hollow bars offer material savings, weight reduction, and easier machining, making them widely used in mechanical engineering, hydraulic cylinders, bearing sleeves, petrochemical equipment, and structural components.

They are an ideal substitute for machining solid bars with drilled holes, significantly reducing raw material waste and machining costs.


2) Manufacturing Process
    •Raw material: stainless steel billets / hollows
    •Piercing → hot rolling or cold drawing
    •Heat treatment: solution annealing / bright annealing (BA)
    •Finishing: straightening, cutting, OD/ID machining
    •Testing: dimensional tolerance, concentricity, straightness, NDT


3) Key Features
    •High precision: strict OD/ID tolerances, excellent concentricity
    •Strength & corrosion resistance: suitable for high pressure, high temperature, and corrosive environments
    •Cost saving: alternative to drilling solid bars
    •Good straightness: suitable for precision machining
    •Surface options: pickled, polished, bright annealed


4) Standards

(Stainless only)
    •ASTM/ASME: ASTM A511, ASTM A312
    •EN/DIN: EN 10294-2, DIN 17456, DIN 17458
    •JIS: JIS G3446
    •GB/T: GB/T 14975, GB/T 14976


5) Grades
    •Austenitic SS: 304, 304L, 316, 316L, 321, 310S
    •Duplex SS: 2205, 2507
    •High corrosion resistance: 904L, 254SMo
    •Precipitation hardening SS: 17-4PH


6) Applications
    •Machinery: bearing sleeves, hydraulic cylinders, gear rings
    •Petrochemical: high-pressure piping, reactor parts, corrosion-resistant components
    •Energy & Power: turbine parts, boiler fittings
    •Automotive: shafts, bushings, suspension & damper components
    •Paper & Mining Machinery: rolls, wear-resistant parts
    •Structural parts: replacing drilled solid bar components


7) Quality & Testing
    •Chemical composition (spectrometer, C/S analysis)
    •Mechanical testing (tensile, hardness, impact)
    •Dimensional accuracy (OD, ID, WT tolerance)
    •NDT: eddy current, ultrasonic
    •Surface inspection (cracks, roughness)
    •Third-party inspection: SGS, TÜV, LR, BV


8) Supply & Packaging
    •Forms: fixed/random length; rough machined or semi-finished
    •Ends: plain, beveled, chamfered
    •Packaging: wooden cases, steel frames, waterproof wrapping
    •Traceability: MTC (EN 10204 3.1/3.2)


9) Ordering Guide
    •Grade (e.g., 316L / ASTM A511)
    •Size (OD × ID × Length)
    •Surface finish (pickled, BA, polished)
    •Machining requirements (semi-finished / machining blanks)
    •Testing requirements (NDT, hydro test, third-party witness)
    •Packaging (wooden cases, steel frames, anti-rust oil)


10) Why Us
    •Cost effective: saves material vs drilling solid bars
    •High precision: tight OD/ID tolerances & concentricity
    •Wide grade coverage: austenitic, duplex, corrosion-resistant, precipitation hardening
    •Extensive applications: machinery, petrochemical, power, automotive, paper & mining
    •Certified quality: ASTM, EN, GB/T compliance, third-party approvals
    •Integrated supply: bars, tubes, plates, fittings, flanges for complete projects
 

 

1. General specifications:

Standards: DIN17458, DIN17456, EN 10216,EN10088, ASTM276
Materials: 304/304L, EN 1.4301/1.4307, 316/316L, EN 1.4401/1.4404
 
O.D.
mm		 I.D.
mm		 Weight
average
kg/m		 Guaranteed component sizes
Chucked true to O.D. Chucked true to I.D.
max.
O.D. mm		 min.
I.D. mm		 max.
O.D. mm		 min.
I.D. mm
32
32
36
36
36
40
40
40
45
45
45
50
50
50
56
56
56
60
63
63
63
63
63
71
71
71
71
75
75
75
80
80
80
80
85
85
85
90
90
90
90
95
95
95
100
100
100
100
106
106
106
106
112
112
112
112
118
118
118
118
125
125
125
125
132
132
132
132
140
140
140
140
150
150
150
150
160
160
160
160
170
170
170
170
170
170
180
180
180
180
190
190
190
190
200
200
200
200
212
212
212
224
224
236
236
250
275
300
340
380
400
420		 20
16
25
20
16
28
25
20
32
28
20
36
32
25
40
36
28
40
50
45
40
36
32
56
45
40
36
60
50
40
63
50
45
40
67
55
45
71
63
56
50
75
67
50
80
71
63
56
80
71
63
56
90
80
71
63
90
80
71
63
100
90
80
71
106
90
80
71
112
100
90
80
125
106
95
80
132
122
112
90
140
130
128
118
106
100
150
140
125
100
160
150
140
132
170
160
150
140
170
150
130
180
140
190
150
200
200
200
200
230
300
300		 4.2
5.1
4.5
5.9
6.8
5.5
6.5
7.8
6.7
8.2
10.5
8.0
9.7
12.1
10.2
12.1
15.2
13.2
9.9
12.2
15.4
17.3
19.0
12.9
19.6
22.3
24.1
13.7
21.1
26.0
16.4
25.3
28.3
30.9
18.5
26.8
33.5
20.6
27.1
32.3
36.1
23.0
29.9
42.1
24.4
32.7
39.2
42.3
32.3
40.6
47.1
52.1
30.2
40.6
48.8
55.3
39.0
49.4
57.6
64.2
38.3
49.8
60.2
68.5
42.0
61.1
71.5
79.7
47.8
63.3
74.9
85.2
47.4
74.2
87.7
103.3
56.2
71.6
85.8
112.9
63.8
80.2
80.8
98.4
114.7
122.3
68.4
86.1
110.0
144.4
73.0
91.9
109.9
123.0
77.6
97.6
117.0
134.0
109.0
148.0
182.0
121.0
199.0
133.0
216.0
153.0
247
340
507
609
478
585		 31.0
31.0
35.0
35.0
35.0
39.0
39.0
39.0
44.0
44.0
44.0
49.0
49.0
49.0
55.0
55.0
55.0
58.8
62.0
62.0
62.0
62.0
62.0
69.9
69.9
69.9
69.9
73.8
73.8
73.8
78.8
78.8
78.8
78.8
83.7
83.7
83.7
88.6
88.6
88.6
88.6
93.5
93.5
93.5
98.5
98.5
98.5
98.5
104.4
104.4
104.4
104.4
110.3
110.3
110.3
110.3
116.2
116.2
116.2
116.2
123.1
123.1
123.1
123.1
130.0
130.0
130.0
130.0
137.9
137.9
137.9
137.9
147.7
147.7
147.7
147.7
157.6
157.6
157.6
157.6
167.4
167.4
167.4
167.4
167.4
167.4
177.3
177.3
177.3
177.3
187.1
187.1
187.1
187.1
197.0
197.0
197.0
197.0
208.8
208.8
208.8
220.6
220.6
232.4
232.4
246.2
270.6
295.5
334.9
374.3
394.0
413.7		 21.9
18.0
26.9
22.0
18.1
29.9
27.0
22.1
33.9
30.0
22.2
38.0
34.1
27.2
42.0
38.1
30.3
42.3
51.9
47.0
42.2
38.3
34.4
58.0
47.3
42.4
38.5
62.0
52.2
42.5
65.0
52.4
47.5
42.6
69.1
57.4
47.6
73.1
65.3
58.5
52.6
77.3
69.3
52.7
82.3
73.4
65.5
58.7
82.5
73.5
65.7
58.9
92.5
82.6
73.7
65.8
92.7
82.8
73.8
66.0
102.7
92.8
82.9
74.0
108.8
93.0
83.1
74.2
115.0
103.1
93.2
83.3
128.1
109.3
98.4
83.6
135.3
125.4
115.5
94.0
143.5
133.6
131.6
121.7
109.8
103.9
153.6
143.7
128.9
104.1
163.8
153.9
144.0
136.0
173.9
164.0
154.1
144.2
174.2
154.4
134.6
184.4
144.8
194.6
155.0
204.9
205.5
206.1
207.1
237.8
307.6
308.6		 30.1
30.0
34.1
34.0
33.9
38.1
38.0
37.9
43.1
43.0
42.8
48.0
47.9
47.8
54.0
53.9
53.7
57.7
61.1
61.0
60.8
60.7
60.6
68.9
68.6
68.5
68.4
72.8
72.6
72.3
77.8
77.4
77.3
77.2
82.6
82.3
82.1
87.6
87.3
87.1
87.0
92.4
92.2
91.8
97.4
97.2
97.0
96.8
103.1
103.0
102.7
102.5
109.2
108.9
108.7
108.5
114.9
114.6
114.5
114.2
121.9
121.7
121.4
121.2
128.8
128.4
128.1
127.9
136.6
136.3
136.1
135.8
146.5
146.0
145.7
145.3
156.3
156.0
155.8
155.2
166.0
165.8
165.7
165.5
165.2
165.0
176.0
175.7
175.3
174.7
185.7
185.5
185.3
185.1
195.6
195.4
195.2
194.9
207.2
206.6
206.2
218.9
217.9
230.7
229.7
244.3
268.4
292.4
330.8
369.5
390.9
410.1		 21.0
17.0
26.0
21.0
17.0
29.0
26.0
21.0
33.0
29.0
21.0
37.0
33.0
26.0
41.0
37.0
29.0
41.0
51.0
46.0
41.0
37.0
33.0
57.0
46.0
41.0
37.0
61.0
51.0
41.0
64.0
51.0
46.0
41.0
68.0
56.0
46.0
72.1
64.0
57.0
51.0
76.2
68.0
51.0
81.2
72.1
64.0
57.0
81.2
72.1
64.0
57.0
91.4
81.2
72.1
64.0
91.4
81.2
72.1
64.0
101.5
91.4
81.2
72.1
107.6
91.4
81.2
72.1
113.7
101.5
91.4
81.2
126.9
107.6
96.4
81.2
134.0
123.8
113.7
91.4
142.1
132.0
130.0
119.8
107.6
101.5
152.3
142.1
126.9
101.5
162.4
152.3
142.1
134.0
172.6
162.4
152.3
142.1
172.6
152.3
132.0
182.7
142.1
192.9
152.3
203.0
203.1
203.1
203.1
233.5
304.5
304.5

2.Free Cutting Hollow Bar(High speed machining/Longer tool life/Efficient productivity):

Tags:

Tsisco Industrial Ltd.
Tsisco Industrial Ltd.

Tsisco Industrial Ltd.
Tsisco Industrial Ltd.
Tsisco Industrial Ltd.
Business License

Tags | Privacy Policy

ISO Certification

We Use Cookies

We use cookies and other tracking technologies to enhance your browsing experience, provide personalized content and targeted advertisements, analyze website traffic, and understand visitor behavior.
These include both first-party and third-party cookies. Some data collected through cookies may be stored on our servers to help us improve our website and services. Other cookies are managed by trusted third-party providers (such as Google Analytics), and the information they collect is stored on their platforms in accordance with their own privacy policies.

We Use Cookies

We use cookies and other tracking technologies to enhance your browsing experience, provide personalized content and targeted advertisements, analyze website traffic, and understand visitor behavior.
These include both first-party and third-party cookies. Some data collected through cookies may be stored on our servers to help us improve our website and services. Other cookies are managed by trusted third-party providers (such as Google Analytics), and the information they collect is stored on their platforms in accordance with their own privacy policies.

Essential cookies are required for core website functions, such as security, authentication, and payment. These cookies are always active and do not collect personally identifiable information.

These cookies help us understand how visitors interact with our website—for example, by tracking page visits and traffic sources—so we can improve site performance and user experience. Disabling them may limit our ability to analyze and enhance the services we provide.

These cookies enable enhanced features and personalization on our website, such as remembering your preferences or enabling third-party tools. They may be set by us or by trusted partners. If you choose to disable them, some features may not work as intended.

These cookies help us understand what you are interested in so that we can show you relevant advertising on other websites. Turning these cookies off will mean we are unable to show you any personalized advertising.