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                                                                                                                                                                                                                                529x9螺旋焊接鋼管對頭焊縫、補焊及環向

                                                                                                                                                                                                                                2020/5/9    來源:    作者:螺旋管廠家  閱讀:次  【打印此頁】

                                                                                                                                                                                                                                 

                                                                                                                                                                                                                                螺旋鋼管執行標準

                                                                                                                                                                                                                                項目

                                                                                                                                                                                                                                輸送鋼管

                                                                                                                                                                                                                                GB/T9711-1997

                                                                                                                                                                                                                                API Spec 5L

                                                                                                                                                                                                                                SY/T5037-2000

                                                                                                                                                                                                                                管端外徑偏差

                                                                                                                                                                                                                                +2.38mm
                                                                                                                                                                                                                                -0.79mm

                                                                                                                                                                                                                                D< 508 ±0.75%D
                                                                                                                                                                                                                                D≥508 ±1.00%D

                                                                                                                                                                                                                                ±1.25%D

                                                                                                                                                                                                                                壁厚偏差

                                                                                                                                                                                                                                D< 508 15.0%t12.5%t

                                                                                                                                                                                                                                D≥508 17.5%t10.5%t

                                                                                                                                                                                                                                D< 508 ±12.5%t
                                                                                                                                                                                                                                DC508 ±10.0%t

                                                                                                                                                                                                                                ±12.5%t

                                                                                                                                                                                                                                焊縫余高

                                                                                                                                                                                                                                ≤3.18mm

                                                                                                                                                                                                                                0.5-3.0mm

                                                                                                                                                                                                                                ≤ 2.0mm
                                                                                                                                                                                                                                ≤ 2.5mm

                                                                                                                                                                                                                                直度

                                                                                                                                                                                                                                ≤0.2%L

                                                                                                                                                                                                                                ≤0.2%L

                                                                                                                                                                                                                                ≤0.25%L

                                                                                                                                                                                                                                管端狀態

                                                                                                                                                                                                                                坡口角30°-- 35°
                                                                                                                                                                                                                                頓邊1.59±0.79mm
                                                                                                                                                                                                                                切斜≤1.59mm

                                                                                                                                                                                                                                坡口角30°-- 35°
                                                                                                                                                                                                                                頓邊1.59±0.79mm
                                                                                                                                                                                                                                切斜≤1.59mm

                                                                                                                                                                                                                                坡口角30°-- 35°
                                                                                                                                                                                                                                頓邊1.59±0.79mm
                                                                                                                                                                                                                                切斜≤1.59mm

                                                                                                                                                                                                                                重量偏差

                                                                                                                                                                                                                                單根+10.0%-3.5%
                                                                                                                                                                                                                                裝車批量-1.75%

                                                                                                                                                                                                                                單根+10.0%-3.5%
                                                                                                                                                                                                                                裝車批量-1.75%

                                                                                                                                                                                                                                單根+10.0%-3.5%
                                                                                                                                                                                                                                裝車批量-1.75%

                                                                                                                                                                                                                                橢圓度

                                                                                                                                                                                                                                D>508 ±1.0%D

                                                                                                                                                                                                                                D>508 ±1.0%D

                                                                                                                                                                                                                                D>508 ±1.0%D

                                                                                                                                                                                                                                無損探傷

                                                                                                                                                                                                                                距管端203mm以內的焊縫采用射線

                                                                                                                                                                                                                                檢驗;距管端203mm以外的焊縫采

                                                                                                                                                                                                                                用超聲波檢驗;對頭焊縫、補焊及環

                                                                                                                                                                                                                                向焊縫采用超聲波檢驗。

                                                                                                                                                                                                                                對頭焊縫、補焊及環向

                                                                                                                                                                                                                                焊縫采用超聲波檢驗。

                                                                                                                                                                                                                                對頭焊縫、補焊及環向

                                                                                                                                                                                                                                焊縫采用超聲波檢驗。

                                                                                                                                                                                                                                水壓試驗

                                                                                                                                                                                                                                P=2σt/D

                                                                                                                                                                                                                                P=2σt/D

                                                                                                                                                                                                                                P=2σt/D#cccccc

                                                                                                                                                                                                                                備注

                                                                                                                                                                                                                                D:鋼管公稱外徑,mm  t:鋼管公稱壁厚,mm  
                                                                                                                                                                                                                                σ]靜水壓試驗的試驗應力,MPa;
                                                                                                                                                                                                                                L:
                                                                                                                                                                                                                                單根鋼管長度   P:靜水壓試驗壓力,Pa

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                                                                                                                                                                                                                                最近最新2019中文字幕,日本H熟肉动漫在线观看,漂亮少妇边打电话边做,午夜DJ免费直播视频